diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index 1b2a737..2ab1c1a 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -1,6 +1,14 @@
-Changes sicne release 4.0 Beta 1
+Release 4.0 Beta 2
 -------------------
 
+The 4.0 BETA2 release fixes a number of non-critical issues found since release 4.0-beta1 and 
+introduces basic support for HTTP/1.1 response caching. Please note that caching for streaming 
+HTTP exchanges is currently not supported.
+
+Users of previous releases of HttpAsyncClient are advised to upgrade.
+
+Changelog:
+
 * [HTTPASYNC-20] HTTP exchange can now be aborted with HttpUriRequest#abort().
   Contributed by Oleg Kalnichevski <olegk at apache.org>