gh-128307: Update what's new in 3.13 and 3.14 with create_task changes

Doc/whatsnew/3.13.rst

@@ -730,6 +730,20 @@ asyncio
   never awaited).
   (Contributed by Arthur Tacca and Jason Zhang in :gh:`115957`.)
 
+* The function and methods named ``create_task`` have received a new
+  ``**kwargs`` argument that is passed through to the task constructor.
+  This changed was accidentally added in 3.13.3,
+  and broke the API contract for custom task factories.
+  Several third-party task factories implemented workarounds for this.
+  In 3.13.4 and later releases the old factory contract is honored
+  once again (until 3.14), but the extra ``**kwargs`` argument still
+  allows passing additional keyword arguments to :class:`~asyncio.Task`
+  and to custom task factories, to keep the workarounds working.
+  This affects the following function and methods:
+  :meth:`asyncio.create_task`,
+  :meth:`asyncio.loop.create_task`,
+  :meth:`asyncio.TaskGroup.create_task`.
+  (Contributed by Thomas Grainger in :gh:`128307`.)
 
 base64
 ------

Doc/whatsnew/3.14.rst

@@ -1064,6 +1064,23 @@ ast
   (Contributed by Semyon Moroz in :gh:`133367`.)
 
 
+asyncio
+-------
+
+* The function and methods named ``create_task`` now take an arbitrary
+  list of keyword arguments. All keyword arguments are passed to the
+  :class:`~asyncio.Task` constructor or the custom task factory.
+  (See :meth:`~asyncio.loop.set_task_factory` for details.)
+  Keywords ``name`` and ``context`` are no longer special; the name
+  should now be set using the ``name`` keyword argument of the factory,
+  and ``context`` may be ``None``.
+  This affects the following function and methods:
+  :meth:`asyncio.create_task`,
+  :meth:`asyncio.loop.create_task`,
+  :meth:`asyncio.TaskGroup.create_task`.
+  (Contributed by Thomas Grainger in :gh:`128307`.)
+
+
 bdb
 ---