The Universal Messaging release notes cover the additional UM-specific functionality that has been added to Command Central in each release. You can see the latest release notes here.
At a very high level, our goal is to migrate enough EM functionality into Command Central to allow all EM users to eventually switch to Command Central. This is a long-term project that has to be prioritised against all the other planned work on UM, so I cannot commit to a date when it will be complete.
There are currently no plans for any UM integration with MWS.
To be honest, this forum is not really the appropriate place to discuss product roadmaps and nothing I have said here should be taken as a committment about any future release of Universal Messaging or Command Central. If you are interested in the product roadmap please contact your Software AG account manager who would be able to organise a session with Product Managment. Alternatively you might want to check out some of the presentations from the 10.3 release virtual conference.