Add a what's new entry.

ZeroIntensity · ZeroIntensity · commit 85ce7dd490ac · 2024-11-02T13:04:05.000-04:00
diff --git a/Doc/whatsnew/3.14.rst b/Doc/whatsnew/3.14.rst
@@ -528,6 +528,8 @@ New Features
 
   (Contributed by Victor Stinner in :gh:`107954`.)
 
+* Add :c:func:`PyUnstable_Object_EnableDeferredRefcount` for enabling
+  deferred reference counting, as outlined in :pep:`703`.
 
 Porting to Python 3.14
 ----------------------
