Did you take a look at the quickstarts included with the new ContainerModel block?
That's the one that replaces CAB. There are no plans to upgrade smartparts and workspaces, as they didn't make much sense (IMO) in the mobile world in the first place. The new model is much simpler and familiar to the traditional way.
MVP doesn't need to be upgraded :). You can see it in action in those quickstarts.
Let us know what you think!