Update CHANGELOG.

CHANGELOG.md

@@ -1,13 +1,17 @@
 v0.8.7 (2014-xx-xx)
 ================================================================================
 
+- Switched internally to the `CLUSTER SLOTS` command instead of `CLUSTER NODES`
+  to fetch the updated slots map from redis-cluster. This change requires users
+  to upgrade Redis nodes to >= 3.0.0b7.
+
+- Implemented support for `PING` in PUB/SUB loop for Redis >= 3.0.0b8.
+
 - The default client-side sharding strategy and the one for redis-cluster now
   share the same implementations as they follow the same rules. One difference,
   aside from the different hashing function used to calculate distribution, is
   in how empty hash tags like {} are treated by redis-cluster.
 
-- Implemented `PING` support in PUB/SUB loop abstraction for Redis 3.0.0.
-
 
 v0.8.6 (2014-07-15)
 ================================================================================