3.0: Add change 288282 to the release notes

Change-Id: I3aeeb3cb1d7efe4108788463feb8fe14aef2ddb6
diff --git a/pages/site/releases/3.0.md b/pages/site/releases/3.0.md
index 53d8cd7..faa7ea9 100644
--- a/pages/site/releases/3.0.md
+++ b/pages/site/releases/3.0.md
@@ -214,6 +214,13 @@
 
 ## Bugfix Releases
 
+### 3.0.16 (Development)
+
+* Bug Fixes
+
+  * [Issue 12287](https://bugs.chromium.org/p/gerrit/issues/detail?id=12287)
+  Add a warning if submitting a change with an open change edit.
+
 ### 3.0.15
 
 * Security Fixes