Add a couple more details in 2.13 summary

Change-Id: If23bba204140495f555c47288b72970e2ccb320b
diff --git a/releases/README.md b/releases/README.md
index aa802c5..a6520a2 100644
--- a/releases/README.md
+++ b/releases/README.md
@@ -16,10 +16,14 @@
 
 ## 2.13 {#2.13}
 
+* Support for Git LFS
+
 * Metrics interface
 
 * Hooks plugin
 
+* Access control for git submodule subscriptions
+
 [Release notes for Gerrit 2.13](/releases/2.13.md).
 
 ## 2.12 {#2.12}