diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
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--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,5 +1,11 @@
 Xamarin.Forms.GoogleMaps Release Notes
 ----
+# 2.1.1-beta4
+
+## New Features
+
+* #386 [Android/iOS]Add Pin.Transparency property
+
 # 2.1.1-beta3
 
 ## Bug Fixes