Version 2.0 release notes (#2021)

docs/source/release-notes.rst

@@ -6,8 +6,22 @@ Here are release notes for each snapshot release from M9 onwards.
 Release 2.0
 ----------
 
-Support for observer/regulator nodes has returned. Read :doc:`tutorial-observer-nodes` to learn more or examine the
-interest rate swaps demo.
+Following quickly on the heels of the release of Corda 1.0, Corda version 2.0 consolidates
+a number of security updates for our dependent libraries alongside the reintroduction of the Observer node functionality.
+This was absent from version 1 but based on user feedback its re-introduction removes the need for complicated "isRelevant()" checks.
+
+In addition the fix for a small bug present in the coin selection code of V1.0 is integrated from master.
+
+* **Version Bump**
+
+Due to the introduction of new APIs, Corda 2.0 has a platform version of 2. This will be advertised in the network map structures
+and via the versioning APIs.
+
+* **Observer Nodes**
+
+Adds the facility for transparent forwarding of transactions to some third party observer, such as a regulator. By having
+that entity simply run an Observer node they can simply recieve a stream of digitally signed, de-duplicated reports that
+can be used for reporting.
 
 Release 1.0
 -----------