They say it has a "Unique, Professional Body". Sure looks like an N80 platform to me, which is my biggest complaint about the camera. Looks like minor improvements over the S2 in all, also 1/180 flash sync instead of 1/125. They do say that the new sensor is better with highlights, we'll have to see what the sample images look like.
I think I'll stick with the S2 but now we know what's official. A friend faxed me this info which was given to him today by a guy at Calumet.