Given the roadmap there, I'd say that the wait won't be terribly long. I have been very impressed with the turnaround times on new versions of MVC so far.

The feature that seems most likely to cause issues with a release would be Recipes because of their connection to NuGet. I'd expect to see a pretty feature complete CTP without that first, with the complete implementation being spread across one or two more.

I have no inside line on this, but I've been working with it since v1 so I follow it pretty closely.