Release Notes paragraph for Change Streams

Author: ravindk89

source/release-notes/3.6.txt

@@ -213,6 +213,31 @@ The :update:`$position` modifier for the :update:`push` update operator
 can accept a negative array index value to indicate a position starting
 from the end of the array.
 
+.. _3.6-change-streams:
+
+Change Streams
+--------------
+
+MongoDB 3.6 supports opening change streams against replica sets and
+sharded clusters with replica set shards.
+
+Change streams allow applications to access real-time data changes 
+without the complexity and risk of tailing the :term:`oplog`. 
+Applications can use change streams to subscribe to all data changes
+on a collection and respond to those changes.
+
+You can open a change stream from any 3.6-series driver using the
+:method:`db.collection.watch()` method. See the documentation for 
+your preferred driver for complete instructions on usage.
+
+See :ref:`changeStreams` for more information. 
+
+.. important::
+
+   To use change streams, ``featureCompatibilityVersion`` must be set to
+   "3.6". For more information, see :ref:`view-fcv` and
+   :dbcommand:`setFeatureCompatibilityVersion`.
+
 .. _3.6-sessions: