Document r43622.
diff --git a/Misc/NEWS b/Misc/NEWS
index d758dc3..0cda340 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -166,6 +166,10 @@
 Core and builtins
 -----------------
 
+- On Windows, .DLL is not an accepted file name extension for
+  extension modules anymore; extensions are only found if they
+  end in .PYD.
+
 - Bug #1421664: sys.stderr.encoding is now set to the same value as
   sys.stdout.encoding.