diff -r 31493a1b0e39 -r f286eefbd20d CHANGELOG
--- a/CHANGELOG	Sun Oct 15 00:07:21 2017 +0530
+++ b/CHANGELOG	Mon Oct 30 19:24:14 2017 +0100
@@ -10,6 +10,11 @@
   * evolve: rename '--contentdivergent' flag to '--content-divergent'
   * evolve: rename '--phasedivergent' flag to '--phase-divergent'
 
+topic
+
+  * add an experimental flag to enforce one head per name policy,
+    (off by default, see 'hg help -e topic' for details)
+
 6.8.0 -- 2017-10-23
 -------------------