Document ssh command updates and bug fixes in the 2.6 release notes

Change-Id: I1558566c05a5f3bce23f7ae203efa25636b9a691
diff --git a/ReleaseNotes/ReleaseNotes-2.6.txt b/ReleaseNotes/ReleaseNotes-2.6.txt
index a7e5ee3..249df7f 100644
--- a/ReleaseNotes/ReleaseNotes-2.6.txt
+++ b/ReleaseNotes/ReleaseNotes-2.6.txt
@@ -85,6 +85,9 @@
 * `query` includes author and change size information when given
   certain options on the command line.
 
+* `test-submit-rule` tests the `can_submit` rule with a prolog script loaded from a file or stdin.
+* `ls-user-refs` lists which refs are visible for a given user.
+
 Plugins
 ~~~~~~~
 * Plugins can contribute Prolog facts/predicates from Java.
@@ -138,6 +141,13 @@
   may need to retry a change not yet merged by the first. Please note
   we still do not believe this is sufficient to enable multi-master.
 
+SSH
+~~~
+* `plugin ls` shows status of enabled plugins as "ENABLED".
+* `review --restore` allows a review score to be added on the restored change.
+* link:https://code.google.com/p/gerrit/issues/detail?id=1721[Issue 1721]:
+`review --message` only adds the message once.
+
 Documentation
 -------------