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

Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
python · Jun 8, 2021 · 257e400 · 257e400
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commit 257e400
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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
 ------------