--- a/doc/3.18.rst	Mon Aug 26 16:12:30 2013 +0200
+++ b/doc/3.18.rst	Mon Aug 26 16:14:09 2013 +0200
@@ -28,3 +28,6 @@
   (see `#2936496 <http://www.cubicweb.org/2936496>`_)
 
 * all 3.8 backward compat is gone
+
+* all 3.9 backward compat for the interface -> adapter transition is
+  gone