Add release notes for 2.16.8

Change-Id: I34ddb42efe50c2af713a91d81c34e7d8d9fe7151
diff --git a/pages/site/releases/2.16.md b/pages/site/releases/2.16.md
index 13d0bff..5831cab 100644
--- a/pages/site/releases/2.16.md
+++ b/pages/site/releases/2.16.md
@@ -506,6 +506,49 @@
 
 ## Bugfix Releases
 
+### 2.16.8
+
+* Add support for Elasticsearch 6.7.x and 7.0.x.
+
+  The elasticsearch-rest-client is upgraded to 7.0.0.
+
+* Don't abort auto-abandoning if one change failed.
+
+  When failing to query a single change during auto-abandoning, the whole
+  process was aborted. Now the failure is logged and the process continues
+  to attempt to abandon subsequent changes.
+
+* [Issue 10693](https://bugs.chromium.org/p/gerrit/issues/detail?id=10693):
+Avoid empty item in list of conflicting files on cherry-picking a change.
+
+* Fix leak of temp files during merge operations.
+
+  `TemporaryBuffer` instances created during merge operations could leave
+  undeleted temporary files in the file system.
+
+* Improve logging of invalid schedule values, and clarify documentation.
+
+  When a schedule value, for example `gc.startTime` or `gc.interval`, was
+  configured, the error message in the log was not helpful. This is now
+  improved to include more information about what was wrong.
+
+  Additionally, the documentation is updated to clarify that the hour
+  value in times must be zero-padded.
+
+* Upgrade Flogger to version 0.4.
+
+* Upgrade protobuf-java to 3.7.1.
+
+* PolyGerrit fixes:
+
+  * [Issue 10696](https://bugs.chromium.org/p/gerrit/issues/detail?id=10696):
+Increase autocomplete limit for repo inheritance in access page to 50.
+
+  * [Issue 10703](https://bugs.chromium.org/p/gerrit/issues/detail?id=10703):
+Highlight Starlark files as Python.
+
+  * Do not show the HTTP credentials screen when auth type is not HTTP.
+
 ### 2.16.7
 
 #### New Features