bpo-43795: Note Stable ABI PEP in What's New (GH-26479)

encukou · Fidget-Spinner · web-flow · commit 257e400a19b3 · 2021-06-08T17:20:07.000+02:00
Co-authored-by: Ken Jin &lt;28750310+Fidget-Spinner@users.noreply.github.com&gt;
diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
@@ -1791,6 +1791,16 @@ Build Changes
 C API Changes
 =============
 
+PEP 652: Maintaining the Stable ABI
+-----------------------------------
+
+The Stable ABI (Application Binary Interface) for extension modules or
+embedding Python is now explicitly defined.
+:ref:`stable` describes C API and ABI stability guarantees along with best
+practices for using the Stable ABI.
+
+(Contributed by Petr Viktorin in :pep:`652` and :issue:`43795`.)
+
 New Features
 ------------
 
