All the specs really look great, the only thing that I am a bit upset about is the price - $3500 seems high for the body only. I was expecting it to be a 20% increase from $2400 for the 5D2 to $2899 (max $3000) for the 5D3.
Let's hope that it's not $3500 body only!
I would expect $3,500 for body only. Also compare it to the 1Dx. With more MP, same AF, etc, you are getting a lot of the features of the 1Dx for just over half the price. ~1/3 of the price wouldn't make sense.
BTW, if the rest of the recent rumors are true, you are looking at faster fps, another stop or so of ISO performance and I am hoping for better DR as well.