Release notes for Gerrit 2.12.6

Change-Id: Ia19cf7eca39cb7312b3114241f31f3dc8e0541ce
diff --git a/releases/2.12.md b/releases/2.12.md
index 6cbfa57..4ed003b 100644
--- a/releases/2.12.md
+++ b/releases/2.12.md
@@ -1,13 +1,15 @@
 # Gerrit 2.12
 
-Download: **[2.12.5](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.5.war)**
+Download: **[2.12.6](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.6.war)**
+| [2.12.5](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.5.war)
 | [2.12.4](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.4.war)
 | [2.12.3](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.3.war)
 | [2.12.2](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.2.war)
 | [2.12.1](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.1.war)
 | [2.12](https://gerrit-releases.storage.googleapis.com/gerrit-2.12.war)
 
-Documentation: **[2.12.5](https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.5/index.html)**
+Documentation: **[2.12.6](https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.6/index.html)**
+| [2.12.5](https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.5/index.html)
 | [2.12.4](https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.4/index.html)
 | [2.12.3](https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.3/index.html)
 | [2.12.2](https://gerrit-documentation.storage.googleapis.com/Documentation/2.12.2/index.html)
@@ -596,6 +598,27 @@
 
 ## Bugfix Releases
 
+### 2.12.6 {#2.12.6}
+
+* [Issue 4158](https://bugs.chromium.org/p/gerrit/issues/detail?id=4158):
+Notice merged commits even if they appear on a different branch.
+
+  If a change was pushed to a topic branch, and then pushed to another
+  branch for review, merging it did not result in it appearing in the
+  repository.
+
+* [Issue 4887](https://bugs.chromium.org/p/gerrit/issues/detail?id=4887):
+Fix submission of multiple changes by cherry-pick.
+
+  When submitting multiple changes by cherry-pick, update the merge tip
+  for each change such that each subsequent change is cherry-picked onto
+  the updated tip of the target branch.
+
+* [Issue 4647](https://bugs.chromium.org/p/gerrit/issues/detail?id=4647):
+Fix copying text in Internet Explorer.
+
+* Prevent double closing of repository when merging changes.
+
 ### 2.12.5 {#2.12.5}
 
 * New preference to enable line wrapping in diff screen and inline editor.