--- a/README	Thu Mar 09 17:34:30 2017 -0800
+++ b/README	Thu Mar 09 17:50:50 2017 -0800
@@ -89,7 +89,8 @@
     only the part related to exchange and is intended to be used by server.
 
     Using the extension will enable evolution, use 'experimental.evolution=!'
-    to disable obsmarkers echange.
+    to disable obsmarkers echange.  The old '__temporary__.advertiseobsolete'
+    option is no longer supported.
 
 5.6.1 -- 2017-02-28