I dunno, this all sounds like it would make a great camera, but it doesn't seem like a logical step from the 7d, at least in my eyes. Don't get me wrong, I see the point of releasing a sort of followup to the 1d series, but integrated grip and price well north of $3k sounds like it should be a "4d" or whatever you want to call it- a 1dV, so to speak. That was is so much of the beauty of the 7d- manageable size and weight, and a very attractive price. Sure, this would be a great camera for sports/wildlife shooters, but it seems to be getting too close to the 1dx and too far from the 7d. If this is really the 7d2 that goes into production, upon the announcement I'll immediately go buy more LP-E6es and another 7d, and be set for a long time...
Also, I can't help but mention the two things that no one else has: this is one of many prototypes, and it's a CR1. So honestly, I'm not too worried about the fate of the beloved 7d line just yet.