diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index a0180f3778..f859e48c42 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -26,6 +26,8 @@ The following pref variables are obsoleted in 2.2:
 
 The following new LyX functions have been introduced in 2.2:
 
+- buffer-view-cache
+  Opens the last previewed output of the buffer, if it exists.
 
 
 The following LyX functions have been changed in 2.2: