Added 11.2.1 release notes

docs/releasenotes/11.2.0.rst

@@ -1,6 +1,12 @@
 11.2.0
 ------
 
+.. warning::
+
+    The release of Pillow 11.2.0 was halted prematurely, due to concern over the size
+    of Pillow wheels containing libavif. Instead, Pillow 11.2.1 has been released,
+    without libavif included in the wheels.
+
 Security
 ========
 

docs/releasenotes/11.2.1.rst

@@ -0,0 +1,11 @@
+11.2.1
+------
+
+Reading and writing AVIF images
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The release of Pillow 11.2.0 was halted prematurely, due to concern over the size of
+Pillow wheels containing libavif.
+
+Instead, Pillow 11.2.1's wheels do not contain libavif. If you wish to read and write
+AVIF images, you will need to build Pillow from source with libavif 1.0.0 or later.

docs/releasenotes/index.rst

@@ -14,6 +14,7 @@ expected to be backported to earlier versions.
 .. toctree::
   :maxdepth: 2
 
+  11.2.1
   11.2.0
   11.1.0
   11.0.0