add changelog
diff --git a/Misc/NEWS b/Misc/NEWS
index 39eed91..b984b99 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -167,6 +167,10 @@
 Library
 -------
 
+- Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous
+  list() calls aren't added to filter(), map(), and zip() which are directly
+  passed enumerate().
+
 - Issue #16476: Fix json.tool to avoid including trailing whitespace.
 
 - Issue #16549: Make json.tool work again on Python 3 and add tests.