Mention that "submit whole topic" is experimental.

Change-Id: I65567f60c11787001bbf209459cc46b205095510
diff --git a/Documentation/config-gerrit.txt b/Documentation/config-gerrit.txt
index 359f281..3992368 100644
--- a/Documentation/config-gerrit.txt
+++ b/Documentation/config-gerrit.txt
@@ -897,7 +897,7 @@
 Default is "Submit all ${topicSize} changes of the same topic (${submitSize}
 changes including ancestors and other changes related by topic)".
 
-[[change.submitWholeTopic]]change.submitWholeTopic::
+[[change.submitWholeTopic]]change.submitWholeTopic (*Experimental*)::
 +
 Determines if the submit button submits the whole topic instead of
 just the current change.
diff --git a/ReleaseNotes/ReleaseNotes-2.12.txt b/ReleaseNotes/ReleaseNotes-2.12.txt
index 4bfe90d..2280144 100644
--- a/ReleaseNotes/ReleaseNotes-2.12.txt
+++ b/ReleaseNotes/ReleaseNotes-2.12.txt
@@ -35,7 +35,7 @@
 This release includes the following new features. See the sections below for
 further details.
 
-* New "Submit Whole Topic" / "Submitted Together" workflow.
+* New change submission workflows, "Submit Whole Topic" and "Submitted Together".
 
 * Support for GPG Keys and signed pushes.
 
@@ -43,8 +43,8 @@
 New Features
 ------------
 
-New Change Submission Workflow
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+New Change Submission Workflows
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 * New "Submit Whole Topic" setting.
 +
@@ -53,7 +53,7 @@
 `change.submitWholeTopic`] setting is enabled, all changes belonging to the same
 topic will be submitted at the same time.
 +
-This setting is disabled by default.
+This setting should be considered experimental, and is disabled by default.
 
 * Submission of changes may include ancestors.
 +