More pics and details coming...
What I know of the concept right now is that it's RWD, Wankel powered, and will have a limited-slip rear differential.
So far the rumors are that the engine will be a revamped (next generation?) Renesis. It will supposedly resolve the oil gulping nature of the current Wankel and be more fuel efficient (the holy grails of Wankel enginedome?). The new powerplant should also rise in displacement from 1.3 to something near 1.8 liters. Everyone wants two turbos stuffed under the hood and that's rumored as well, but we'll have to see.
The transmission is said to be a dual-clutch 6 speed sequential setup, like the new Mitsubishi Evolution X's transmission.