Release notes for Gerrit 2.7

Change-Id: I898784bb2e577b766e4a9d16e453104ff4b97ec7
diff --git a/ReleaseNotes/index.txt b/ReleaseNotes/index.txt
index 98cc3ac..092f149 100644
--- a/ReleaseNotes/index.txt
+++ b/ReleaseNotes/index.txt
@@ -1,6 +1,11 @@
 Gerrit Code Review - Release Notes
 ==================================
 
+[[2_7]]
+Version 2.7.x
+-------------
+* link:ReleaseNotes-2.7.html[2.7]
+
 [[2_6]]
 Version 2.6.x
 -------------