Added change notes for 3.3.0 release.

Author: carltongibson

CHANGELOG.txt

@@ -1,3 +1,34 @@
+3.3.0 (2021-07-01)
+------------------
+
+Two important new features:
+
+* You can now connect using `Redis Sentinel
+  <https://redis.io/topics/sentinel>`. Thanks to @qeternity.
+
+* There's a new ``RedisPubSubChannelLayer`` that uses Redis Pub/Sub to
+  propagate messages, rather than managing channels and groups directly within
+  the layer. For many use-cases this should be simpler, more robust, and more
+  performant.
+
+  Note though, the new ``RedisPubSubChannelLayer`` layer does not provide all
+  the options of the existing layer, including ``expiry``, ``capacity``, and
+  others. Please assess whether it's appropriate for your needs, particularly
+  if you have an existing deployment.
+
+  The ``RedisPubSubChannelLayer`` is currently marked as *Beta*. Please report
+  any issues, and be prepared that there may be breaking changes whilst it
+  matures.
+
+  The ``RedisPubSubChannelLayer`` accepts ``on_disconnect`` and
+  ``on_reconnect`` config options, providing callbacks to handle the relevant
+  connection events to the Redis instance.
+
+  Thanks to Ryan Henning @acu192.
+
+For both features see the README for more details.
+
+
 3.2.0 (2020-10-29)
 ------------------
 

README.rst

@@ -14,7 +14,8 @@ There are two available implementations:
 * ``RedisChannelLayer`` is the orignal layer, and implements channel and group
   handling itself.
 * ``RedisPubSubChannelLayer`` is newer and leverages Redis Pub/Sub for message
-  dispatch.
+  dispatch. This layer is currently at *Beta* status, meaning it may be subject
+  to breaking changes whilst it matures.
 
 Both layers support a single-server and sharded configurations.