--- a/README	Thu Jun 22 09:47:14 2017 +0200
+++ b/README	Thu Jun 22 10:13:29 2017 +0200
@@ -131,6 +131,7 @@
  - stack: properly abort when and unknown topic is requested,
  - topic: changing topic on revs no longer adds extra instability (issue5441)
  - topic: topics: rename '--change' flag to '--rev' flag,
+ - topic: multiple large performance improvements,
 
 6.4.1 - in progress
 -------------------