Updated HttpAsyncClient 4.0 release notes
git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpasyncclient/trunk@1532680 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index c3598bc..6e31b57 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -1,6 +1,24 @@
-Change since Release 4.0 Beta 4
+Release 4.0
-------------------
+This is the first stable (GA) release of Apache HttpAsyncClient 4.0. HttpAsyncClient is a library
+for asynchronous client-side HTTP communication built on top of HttpCore NIO transport.
+It is a complementary library to Apache HttpClient intended and optimized for special cases
+whereby ability to scale to many thousands of concurrent connections is more important than
+performance in terms of raw data throughput.
+
+HttpAsyncClient 4.0 is designed to have similar APIs as Apache HttpClient 4.3 and a comparable
+feature set. In addition HttpAsyncClient provides full support for zero-copy file upload and
+download operations. It presently does not support transparent content decompression and automatic
+I/O error recovery. These features may be added in future releases.
+
+
+Changelog:
+-------------------
+
+* [ HTTPASYNC-56] Fixed thread deadlock in DefaultClientExchangeHandlerImpl.
+ Contributed by Oleg Kalnichevski <olegk at apache.org>
+
* [HTTPASYNC-52] Proxy configuration set at the request level does not apply.
Contributed by Oleg Kalnichevski <olegk at apache.org>
