Update 2.16.9 release notes

Change-Id: Iba0720d7a479e1ca30c6b23c96a7e497cb8958d8
diff --git a/pages/site/releases/2.16.md b/pages/site/releases/2.16.md
index b6da7c8..c3b0f7d 100644
--- a/pages/site/releases/2.16.md
+++ b/pages/site/releases/2.16.md
@@ -548,11 +548,31 @@
 
 * PolyGerrit fixes
 
+  * Hide overflowing author element content.
+
+    In the case of vertical stacking unicode characters it was possible for
+    the text to overflow out of the element and into other elements on the
+    review page.
+
+    This is a partial fix for the problem described in
+    [issue 107959]https://bugs.chromium.org/p/gerrit/issues/detail?id=10795).
+
+  * [Issue 10744](https://bugs.chromium.org/p/gerrit/issues/detail?id=10744):
+  Fix display of "Show More" after change screen reloaded.
+
+  * [Issue 10757](https://bugs.chromium.org/p/gerrit/issues/detail?id=10757):
+  Fix handling of "Automatically mark viewed files reviewed" preference.
+
+    Files were automatically marked as reviewed even when the setting was
+    disabled.
+
   * [Issue 10549](https://bugs.chromium.org/p/gerrit/issues/detail?id=10549):
   Fix single tab indentation in diff view.
 
   * Hide project-aware top menus from header.
 
+  * Upgrade polymer-resin to 1.2.8.
+
   * Upgrade highlightjs for syntax highlighting fixes:
 
     * Treat `False`, `None` and `True` as literals in python.