diff --git a/CHANGES.rst b/CHANGES.rst
index 3c4d10387..1c31cf0e0 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,6 +4,78 @@
 Changelog
 =========
 
+Version 20.3
+============
+*Released 2023-05-07*
+
+This is the technical changelog for version 20.3. More elaborate release notes can be found in the news channel `@pythontelegrambotchannel <https://t.me/pythontelegrambotchannel>`_.
+
+Major Changes
+-------------
+
+- Full support for API 6.7 (`#3673`_)
+- Add a Stability Policy (`#3622`_)
+
+New Features
+------------
+
+- Add ``Application.mark_data_for_update_persistence`` (`#3607`_)
+- Make ``Message.link`` Point to Thread View Where Possible (`#3640`_)
+- Localize Received ``datetime`` Objects According to ``Defaults.tzinfo`` (`#3632`_)
+
+Minor Changes, Documentation Improvements and CI
+------------------------------------------------
+
+- Empower ``ruff`` (`#3594`_)
+- Drop Usage of ``sys.maxunicode`` (`#3630`_)
+- Add String Representation for ``RequestParameter`` (`#3634`_)
+- Stabilize CI by Rerunning Failed Tests (`#3631`_)
+- Give Loggers Better Names (`#3623`_)
+- Add Logging for Invalid JSON Data in ``BasePersistence.parse_json_payload`` (`#3668`_)
+- Improve Warning Categories & Stacklevels (`#3674`_)
+- Stabilize ``test_delete_sticker_set`` (`#3685`_)
+- Shield Update Fetcher Task in ``Application.start`` (`#3657`_)
+- Recover 100% Type Completeness (`#3676`_)
+- Documentation Improvements (`#3628`_, `#3636`_, `#3694`_)
+
+Dependencies
+------------
+
+- Bump ``actions/stale`` from 7 to 8 (`#3644`_)
+- Bump ``furo`` from 2023.3.23 to 2023.3.27 (`#3643`_)
+- ``pre-commit`` autoupdate (`#3646`_, `#3688`_)
+- Remove Deprecated ``codecov`` Package from CI (`#3664`_)
+- Bump ``sphinx-copybutton`` from 0.5.1 to 0.5.2 (`#3662`_)
+- Update ``httpx`` requirement from ~=0.23.3 to ~=0.24.0 (`#3660`_)
+- Bump ``pytest`` from 7.2.2 to 7.3.1 (`#3661`_)
+
+.. _`#3673`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3673
+.. _`#3622`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3622
+.. _`#3607`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3607
+.. _`#3640`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3640
+.. _`#3632`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3632
+.. _`#3594`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3594
+.. _`#3630`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3630
+.. _`#3634`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3634
+.. _`#3631`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3631
+.. _`#3623`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3623
+.. _`#3668`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3668
+.. _`#3674`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3674
+.. _`#3685`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3685
+.. _`#3657`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3657
+.. _`#3676`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3676
+.. _`#3628`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3628
+.. _`#3636`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3636
+.. _`#3694`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3694
+.. _`#3644`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3644
+.. _`#3643`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3643
+.. _`#3646`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3646
+.. _`#3688`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3688
+.. _`#3664`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3664
+.. _`#3662`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3662
+.. _`#3660`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3660
+.. _`#3661`: https://github.com/python-telegram-bot/python-telegram-bot/pull/3661
+
 Version 20.2
 ============
 *Released 2023-03-25*
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 67dd393b8..c227f30ac 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -21,9 +21,9 @@ author = "Leandro Toledo"
 # built documents.
 #
 # The short X.Y version.
-version = "20.2"  # telegram.__version__[:3]
+version = "20.3"  # telegram.__version__[:3]
 # The full version, including alpha/beta/rc tags.
-release = "20.2"  # telegram.__version__
+release = "20.3"  # telegram.__version__
 
 # If your documentation needs a minimal Sphinx version, state it here.
 needs_sphinx = "6.1.3"
diff --git a/docs/source/stability_policy.rst b/docs/source/stability_policy.rst
index 3be281d1d..2bfd1e9be 100644
--- a/docs/source/stability_policy.rst
+++ b/docs/source/stability_policy.rst
@@ -3,7 +3,7 @@ Stability Policy
 
 .. important::
 
-    This stability policy is in place since version NEXT.VERSION.
+    This stability policy is in place since version 20.3.
     While earlier versions of ``python-telegram-bot`` also had stable interfaces, they had no explicit stability policy and hence did not follow the rules outlined below in all detail.
     Please also refer to the :ref:`changelog <ptb-changelog>`.
 
@@ -105,7 +105,7 @@ Should a similarly big change ever be deemed necessary again by the development
 Non-Bot API Functionality
 #########################
 
-Starting with version NEXT.VERSION, deprecated functionality will stay available for the current and the next major version.
+Starting with version 20.3, deprecated functionality will stay available for the current and the next major version.
 For example:
 
 -  In PTB v20.1.1 the feature exists
@@ -120,7 +120,7 @@ Bot API Functionality
 
 As PTB has no control over deprecations introduced by Telegram and the schedule of these deprecations rarely coincides with PTBs deprecation schedule, we have a special policy for Bot API functionality.
 
-Starting with NEXT.VERSION, deprecated Bot API functionality will stay available for the current and the next major version of PTB *or* until the next version of the Bot API.
+Starting with 20.3, deprecated Bot API functionality will stay available for the current and the next major version of PTB *or* until the next version of the Bot API.
 More precisely, two cases are possible, for which we show examples below.
 
 Case 1
diff --git a/telegram/_bot.py b/telegram/_bot.py
index 02b41620d..37241f709 100644
--- a/telegram/_bot.py
+++ b/telegram/_bot.py
@@ -2866,7 +2866,7 @@ class Bot(TelegramObject, AsyncContextManager["Bot"]):
                 specified text that switches the user to a private chat with the bot and sends the
                 bot a start message with the parameter :paramref:`switch_pm_parameter`.
 
-                .. deprecated:: NEXT.VERSION
+                .. deprecated:: 20.3
                     |api6_7_depr|
             switch_pm_parameter (:obj:`str`, optional): Deep-linking parameter for the
                 :guilabel:`/start` message sent to the bot when user presses the switch button.
@@ -2874,12 +2874,12 @@ class Bot(TelegramObject, AsyncContextManager["Bot"]):
                 :tg-const:`telegram.InlineQuery.MAX_SWITCH_PM_TEXT_LENGTH` characters,
                 only ``A-Z``, ``a-z``, ``0-9``, ``_`` and ``-`` are allowed.
 
-                .. deprecated:: NEXT.VERSION
+                .. deprecated:: 20.3
                     |api6_7_depr|
             button (:class:`telegram.InlineQueryResultsButton`, optional): A button to be shown
                 above the inline query results.
 
-                .. versionadded:: NEXT.VERSION
+                .. versionadded:: 20.3
 
         Keyword Args:
             current_offset (:obj:`str`, optional): The :attr:`telegram.InlineQuery.offset` of
@@ -8185,7 +8185,7 @@ CUSTOM_EMOJI_IDENTIFIER_LIMIT` custom emoji identifiers can be specified.
         """
         Use this method to change the bot's name.
 
-        .. versionadded:: NEXT.VERSION
+        .. versionadded:: 20.3
 
         Args:
             name (:obj:`str`, optional): New bot name;
diff --git a/telegram/_botname.py b/telegram/_botname.py
index 6e69f3908..ed70fb6e6 100644
--- a/telegram/_botname.py
+++ b/telegram/_botname.py
@@ -30,7 +30,7 @@ class BotName(TelegramObject):
     Objects of this class are comparable in terms of equality. Two objects of this class are
     considered equal, if their :attr:`name` is equal.
 
-    .. versionadded:: NEXT.VERSION
+    .. versionadded:: 20.3
 
     Args:
         name (:obj:`str`): The bot's name.
diff --git a/telegram/_chatinvitelink.py b/telegram/_chatinvitelink.py
index 058b0a5ff..9718d5bf8 100644
--- a/telegram/_chatinvitelink.py
+++ b/telegram/_chatinvitelink.py
@@ -55,7 +55,7 @@ class ChatInviteLink(TelegramObject):
         expire_date (:class:`datetime.datetime`, optional): Date when the link will expire or
             has been expired.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         member_limit (:obj:`int`, optional): Maximum number of users that can be members of the
             chat simultaneously after joining the chat via this invite link;
@@ -82,7 +82,7 @@ class ChatInviteLink(TelegramObject):
         expire_date (:class:`datetime.datetime`): Optional. Date when the link will expire or
             has been expired.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         member_limit (:obj:`int`): Optional. Maximum number of users that can be members
             of the chat simultaneously after joining the chat via this invite link;
diff --git a/telegram/_chatjoinrequest.py b/telegram/_chatjoinrequest.py
index 4d349ea70..9629569d6 100644
--- a/telegram/_chatjoinrequest.py
+++ b/telegram/_chatjoinrequest.py
@@ -57,7 +57,7 @@ class ChatJoinRequest(TelegramObject):
         from_user (:class:`telegram.User`): User that sent the join request.
         date (:class:`datetime.datetime`): Date the request was sent.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         user_chat_id (:obj:`int`): Identifier of a private chat with the user who sent the join
             request. This number may have more than 32 significant bits and some programming
@@ -77,7 +77,7 @@ class ChatJoinRequest(TelegramObject):
         from_user (:class:`telegram.User`): User that sent the join request.
         date (:class:`datetime.datetime`): Date the request was sent.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         user_chat_id (:obj:`int`): Identifier of a private chat with the user who sent the join
             request. This number may have more than 32 significant bits and some programming
diff --git a/telegram/_chatmember.py b/telegram/_chatmember.py
index b73cc7896..bea0d593e 100644
--- a/telegram/_chatmember.py
+++ b/telegram/_chatmember.py
@@ -390,7 +390,7 @@ class ChatMemberRestricted(ChatMember):
         until_date (:class:`datetime.datetime`): Date when restrictions
            will be lifted for this user.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         can_send_audios (:obj:`bool`): :obj:`True`, if the user is allowed to send audios.
 
@@ -445,7 +445,7 @@ class ChatMemberRestricted(ChatMember):
         until_date (:class:`datetime.datetime`): Date when restrictions
            will be lifted for this user.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         can_send_audios (:obj:`bool`): :obj:`True`, if the user is allowed to send audios.
 
@@ -574,7 +574,7 @@ class ChatMemberBanned(ChatMember):
         until_date (:class:`datetime.datetime`): Date when restrictions
            will be lifted for this user.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
 
     Attributes:
@@ -584,7 +584,7 @@ class ChatMemberBanned(ChatMember):
         until_date (:class:`datetime.datetime`): Date when restrictions
            will be lifted for this user.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
 
     """
diff --git a/telegram/_chatmemberupdated.py b/telegram/_chatmemberupdated.py
index 59b306234..44d6a55fd 100644
--- a/telegram/_chatmemberupdated.py
+++ b/telegram/_chatmemberupdated.py
@@ -53,7 +53,7 @@ class ChatMemberUpdated(TelegramObject):
         date (:class:`datetime.datetime`): Date the change was done in Unix time. Converted to
             :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         old_chat_member (:class:`telegram.ChatMember`): Previous information about the chat member.
         new_chat_member (:class:`telegram.ChatMember`): New information about the chat member.
@@ -62,7 +62,7 @@ class ChatMemberUpdated(TelegramObject):
         via_chat_folder_invite_link (:obj:`bool`, optional): :obj:`True`, if the user joined the
             chat via a chat folder invite link
 
-            .. versionadded:: NEXT.VERSION
+            .. versionadded:: 20.3
 
     Attributes:
         chat (:class:`telegram.Chat`): Chat the user belongs to.
@@ -70,7 +70,7 @@ class ChatMemberUpdated(TelegramObject):
         date (:class:`datetime.datetime`): Date the change was done in Unix time. Converted to
             :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         old_chat_member (:class:`telegram.ChatMember`): Previous information about the chat member.
         new_chat_member (:class:`telegram.ChatMember`): New information about the chat member.
@@ -79,7 +79,7 @@ class ChatMemberUpdated(TelegramObject):
         via_chat_folder_invite_link (:obj:`bool`): Optional. :obj:`True`, if the user joined the
             chat via a chat folder invite link
 
-            .. versionadded:: NEXT.VERSION
+            .. versionadded:: 20.3
 
     """
 
diff --git a/telegram/_inline/inlinekeyboardbutton.py b/telegram/_inline/inlinekeyboardbutton.py
index 9626fa1d0..6b8a634b5 100644
--- a/telegram/_inline/inlinekeyboardbutton.py
+++ b/telegram/_inline/inlinekeyboardbutton.py
@@ -132,7 +132,7 @@ class InlineKeyboardButton(TelegramObject):
             specified type, open that chat and insert the bot's username and the specified inline
             query in the input field.
 
-            .. versionadded:: NEXT.VERSION
+            .. versionadded:: 20.3
 
             Tip:
                 This is similar to :paramref:`switch_inline_query`, but gives more control on
@@ -193,7 +193,7 @@ class InlineKeyboardButton(TelegramObject):
             specified type, open that chat and insert the bot's username and the specified inline
             query in the input field.
 
-            .. versionadded:: NEXT.VERSION
+            .. versionadded:: 20.3
 
             Tip:
                 This is similar to :attr:`switch_inline_query`, but gives more control on
diff --git a/telegram/_message.py b/telegram/_message.py
index bece91236..02b652d37 100644
--- a/telegram/_message.py
+++ b/telegram/_message.py
@@ -124,7 +124,7 @@ class Message(TelegramObject):
         date (:class:`datetime.datetime`): Date the message was sent in Unix time. Converted to
             :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         chat (:class:`telegram.Chat`): Conversation the message belongs to.
         forward_from (:class:`telegram.User`, optional): For forwarded messages, sender of
@@ -138,7 +138,7 @@ class Message(TelegramObject):
         forward_date (:class:`datetime.datetime`, optional): For forwarded messages, date the
             original message was sent in Unix time. Converted to :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         is_automatic_forward (:obj:`bool`, optional): :obj:`True`, if the message is a channel
             post that was automatically forwarded to the connected discussion group.
@@ -150,7 +150,7 @@ class Message(TelegramObject):
         edit_date (:class:`datetime.datetime`, optional): Date the message was last edited in Unix
             time. Converted to :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         has_protected_content (:obj:`bool`, optional): :obj:`True`, if the message can't be
             forwarded.
@@ -350,7 +350,7 @@ class Message(TelegramObject):
         date (:class:`datetime.datetime`): Date the message was sent in Unix time. Converted to
             :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         chat (:class:`telegram.Chat`): Conversation the message belongs to.
         forward_from (:class:`telegram.User`): Optional. For forwarded messages, sender of the
@@ -362,7 +362,7 @@ class Message(TelegramObject):
         forward_date (:class:`datetime.datetime`): Optional. For forwarded messages, date the
             original message was sent in Unix time. Converted to :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         is_automatic_forward (:obj:`bool`): Optional. :obj:`True`, if the message is a channel
             post that was automatically forwarded to the connected discussion group.
@@ -374,7 +374,7 @@ class Message(TelegramObject):
         edit_date (:class:`datetime.datetime`): Optional. Date the message was last edited in Unix
             time. Converted to :class:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         has_protected_content (:obj:`bool`): Optional. :obj:`True`, if the message can't be
             forwarded.
@@ -852,7 +852,7 @@ class Message(TelegramObject):
         """:obj:`str`: Convenience property. If the chat of the message is not
         a private chat or normal group, returns a t.me link of the message.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 For messages that are replies or part of a forum topic, the link now points
                 to the corresponding thread view.
         """
@@ -3369,7 +3369,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as HTML.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
@@ -3388,7 +3388,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as HTML.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
@@ -3408,7 +3408,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as HTML.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
@@ -3427,7 +3427,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as HTML.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
@@ -3601,7 +3601,7 @@ class Message(TelegramObject):
 
             * |custom_emoji_formatting_note|
 
-        .. deprecated:: NEXT.VERSION
+        .. deprecated:: 20.3
             |custom_emoji_md1_deprecation|
 
         Returns:
@@ -3625,7 +3625,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as Markdown V2.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
@@ -3648,7 +3648,7 @@ class Message(TelegramObject):
 
             * |custom_emoji_formatting_note|
 
-        .. deprecated:: NEXT.VERSION
+        .. deprecated:: 20.3
             |custom_emoji_md1_deprecation|
 
         Returns:
@@ -3672,7 +3672,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as Markdown V2.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
@@ -3695,7 +3695,7 @@ class Message(TelegramObject):
 
             * |custom_emoji_formatting_note|
 
-        .. deprecated:: NEXT.VERSION
+        .. deprecated:: 20.3
             |custom_emoji_md1_deprecation|
 
         Returns:
@@ -3719,7 +3719,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as Markdown V2.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
@@ -3744,7 +3744,7 @@ class Message(TelegramObject):
 
             * |custom_emoji_formatting_note|
 
-        .. deprecated:: NEXT.VERSION
+        .. deprecated:: 20.3
             |custom_emoji_md1_deprecation|
 
         Returns:
@@ -3768,7 +3768,7 @@ class Message(TelegramObject):
         .. versionchanged:: 13.10
            Spoiler entities are now formatted as Markdown V2.
 
-        .. versionchanged:: NEXT.VERSION
+        .. versionchanged:: 20.3
            Custom emoji entities are now supported.
 
         Returns:
diff --git a/telegram/_poll.py b/telegram/_poll.py
index 0e1d56c62..5b92bddcd 100644
--- a/telegram/_poll.py
+++ b/telegram/_poll.py
@@ -173,7 +173,7 @@ class Poll(TelegramObject):
         close_date (:obj:`datetime.datetime`, optional): Point in time (Unix timestamp) when the
             poll will be automatically closed. Converted to :obj:`datetime.datetime`.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
 
     Attributes:
@@ -209,7 +209,7 @@ class Poll(TelegramObject):
         close_date (:obj:`datetime.datetime`): Optional. Point in time when the poll will be
             automatically closed.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
 
     """
diff --git a/telegram/_switchinlinequerychosenchat.py b/telegram/_switchinlinequerychosenchat.py
index 206405f7d..ee32aec4d 100644
--- a/telegram/_switchinlinequerychosenchat.py
+++ b/telegram/_switchinlinequerychosenchat.py
@@ -31,7 +31,7 @@ class SwitchInlineQueryChosenChat(TelegramObject):
     considered equal, if their :attr:`query`, :attr:`allow_user_chats`, :attr:`allow_bot_chats`,
     :attr:`allow_group_chats`, and :attr:`allow_channel_chats` are equal.
 
-    .. versionadded:: NEXT.VERSION
+    .. versionadded:: 20.3
 
     Caution:
         The PTB team has discovered that you must pass at least one of
diff --git a/telegram/_version.py b/telegram/_version.py
index 61490e4be..078b8e4cd 100644
--- a/telegram/_version.py
+++ b/telegram/_version.py
@@ -50,7 +50,7 @@ class Version(NamedTuple):
         return version
 
 
-__version_info__ = Version(major=20, minor=2, micro=0, releaselevel="final", serial=0)
+__version_info__ = Version(major=20, minor=3, micro=0, releaselevel="final", serial=0)
 __version__ = str(__version_info__)
 
 # # SETUP.PY MARKER
diff --git a/telegram/_videochat.py b/telegram/_videochat.py
index d7b348b0e..459427e81 100644
--- a/telegram/_videochat.py
+++ b/telegram/_videochat.py
@@ -150,13 +150,13 @@ class VideoChatScheduled(TelegramObject):
         start_date (:obj:`datetime.datetime`): Point in time (Unix timestamp) when the video
             chat is supposed to be started by a chat administrator
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
     Attributes:
         start_date (:obj:`datetime.datetime`): Point in time (Unix timestamp) when the video
             chat is supposed to be started by a chat administrator
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
 
     """
diff --git a/telegram/_webhookinfo.py b/telegram/_webhookinfo.py
index c62935a7d..26703b378 100644
--- a/telegram/_webhookinfo.py
+++ b/telegram/_webhookinfo.py
@@ -52,7 +52,7 @@ class WebhookInfo(TelegramObject):
         last_error_date (:class:`datetime.datetime`): Optional. Datetime for the most recent
             error that happened when trying to deliver an update via webhook.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         last_error_message (:obj:`str`, optional): Error message in human-readable format for the
             most recent error that happened when trying to deliver an update via webhook.
@@ -71,7 +71,7 @@ class WebhookInfo(TelegramObject):
 
             .. versionadded:: 20.0
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
     Attributes:
         url (:obj:`str`): Webhook URL, may be empty if webhook is not set up.
@@ -82,7 +82,7 @@ class WebhookInfo(TelegramObject):
         last_error_date (:class:`datetime.datetime`): Optional. Datetime for the most recent
             error that happened when trying to deliver an update via webhook.
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
         last_error_message (:obj:`str`): Optional. Error message in human-readable format for the
             most recent error that happened when trying to deliver an update via webhook.
@@ -102,7 +102,7 @@ class WebhookInfo(TelegramObject):
 
             .. versionadded:: 20.0
 
-            .. versionchanged:: NEXT.VERSION
+            .. versionchanged:: 20.3
                 |datetime_localization|
     """
 
diff --git a/telegram/_writeaccessallowed.py b/telegram/_writeaccessallowed.py
index faa5c0072..209412eca 100644
--- a/telegram/_writeaccessallowed.py
+++ b/telegram/_writeaccessallowed.py
@@ -33,12 +33,12 @@ class WriteAccessAllowed(TelegramObject):
     Args:
         web_app_name (:obj:`str`, optional): Name of the Web App which was launched from a link.
 
-            .. versionadded:: NEXT.VERSION
+            .. versionadded:: 20.3
 
     Attributes:
         web_app_name (:obj:`str`): Optional. Name of the Web App which was launched from a link.
 
-            .. versionadded:: NEXT.VERSION
+            .. versionadded:: 20.3
 
     """
 
diff --git a/telegram/constants.py b/telegram/constants.py
index 33fe2c758..7250ceabb 100644
--- a/telegram/constants.py
+++ b/telegram/constants.py
@@ -215,7 +215,7 @@ class BotNameLimit(IntEnum):
     """This enum contains limitations for the methods :meth:`telegram.Bot.set_my_name`.
     The enum members of this enumeration are instances of :class:`int` and can be treated as such.
 
-    .. versionadded:: NEXT.VERSION
+    .. versionadded:: 20.3
     """
 
     __slots__ = ()
@@ -754,7 +754,7 @@ class InlineQueryLimit(IntEnum):
     :paramref:`~telegram.Bot.answer_inline_query.switch_pm_parameter` parameter of
     :meth:`telegram.Bot.answer_inline_query`.
 
-    .. deprecated:: NEXT.VERSION
+    .. deprecated:: 20.3
         Deprecated in favor of :attr:`InlineQueryResultsButtonLimit.MIN_START_PARAMETER_LENGTH`.
     """
     MAX_SWITCH_PM_TEXT_LENGTH = 64
@@ -762,7 +762,7 @@ class InlineQueryLimit(IntEnum):
     :paramref:`~telegram.Bot.answer_inline_query.switch_pm_parameter` parameter of
     :meth:`telegram.Bot.answer_inline_query`.
 
-    .. deprecated:: NEXT.VERSION
+    .. deprecated:: 20.3
         Deprecated in favor of :attr:`InlineQueryResultsButtonLimit.MAX_START_PARAMETER_LENGTH`.
     """
 
@@ -792,7 +792,7 @@ class InlineQueryResultsButtonLimit(IntEnum):
     """This enum contains limitations for :class:`telegram.InlineQueryResultsButton`.
     The enum members of this enumeration are instances of :class:`int` and can be treated as such.
 
-    .. versionadded:: NEXT.VERSION
+    .. versionadded:: 20.3
     """
 
     __slots__ = ()
diff --git a/telegram/ext/_application.py b/telegram/ext/_application.py
index 8a3868d26..09c89222f 100644
--- a/telegram/ext/_application.py
+++ b/telegram/ext/_application.py
@@ -1394,7 +1394,7 @@ class Application(Generic[BT, CCT, UD, CD, BD, JQ], AsyncContextManager["Applica
             Note that for data which should be available globally in all handler callbacks
             independent of the chat/user, it is recommended to use :attr:`bot_data` instead.
 
-        .. versionadded:: NEXT.VERSION
+        .. versionadded:: 20.3
 
         Args:
             chat_ids (:obj:`int` | Collection[:obj:`int`], optional): Chat IDs to mark.
diff --git a/telegram/helpers.py b/telegram/helpers.py
index 9bf8ba730..bf4a52761 100644
--- a/telegram/helpers.py
+++ b/telegram/helpers.py
@@ -44,7 +44,7 @@ if TYPE_CHECKING:
 def escape_markdown(text: str, version: int = 1, entity_type: str = None) -> str:
     """Helper function to escape telegram markup symbols.
 
-    .. versionchanged:: NEXT.VERSION
+    .. versionchanged:: 20.3
         Custom emoji entity escaping is now supported.
 
     Args: