Start release notes for 2.15.8

Change-Id: I6c8fdb96c76c967e94f53aa2bf66d0831d63ab98
diff --git a/pages/site/releases/2.15.md b/pages/site/releases/2.15.md
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--- a/pages/site/releases/2.15.md
+++ b/pages/site/releases/2.15.md
@@ -397,6 +397,47 @@
 
 ## Bugfix Releases
 
+### 2.15.8
+
+* [Issue 9024](https://bugs.chromium.org/p/gerrit/issues/detail?id=9024):
+Fix setting `PRIVATE` and `WIP` for updated changes in console report.
+
+  In some cases the private and work-in-progress status indicator for
+  changes updated by push was shown incorrectly.
+
+* [Issue 9768](https://bugs.chromium.org/p/gerrit/issues/detail?id=9768):
+Explicitly set the number of shards and replicas for Elasticsearch, and
+allow them to be configured.
+
+  From Elasticsearch version 7 the default number of shards per node
+  will be changed from 5 to 1.
+
+  The number of shards and number of replicas are now explicitly set when
+  creating the index.
+
+  The new settings `elasticsearch.numberOfShards` and `elasticsearch.numberOfReplicas`
+  allow the values to be configured. The default values are 5 and 1,
+  respectively, which is the same as the default values used by Elasticsearch
+  prior to version 7.
+
+* [Issue 10106](https://bugs.chromium.org/p/gerrit/issues/detail?id=10106):
+Fix incorrect json in the example for the 'Set Access' REST endpoint.
+
+* Upgrade elasticsearch-rest-client to 6.5.3.
+
+* Discontinue support for Elasticsearch 2.4.
+
+* Add preliminary support for Elasticsearch 7.
+
+  Support for Elasticsearch 7 is added, and tested against the `alpha1`
+  release.
+
+* [Issue 10112](https://bugs.chromium.org/p/gerrit/issues/detail?id=10112):
+Upgrade rules_closure to make Gerrit buildable with the latest Bazel version.
+
+* [Issue 9781](https://bugs.chromium.org/p/gerrit/issues/detail?id=9781):
+Allow to disable the groups relevance filtering for LDAP.
+
 ### 2.15.7
 
 * [Issue 9952](https://bugs.chromium.org/p/gerrit/issues/detail?id=9952):