I would have been surprised to see a higher MP sensor on a Rebel/xxxD, or even a 70D, prior to the 7DII.
Well I believe / think it is possible. Or is it wishful thinking?
The Canon 650D with one Digic 5 - 2012 / spring
Next the Canon 70D with one Digic 5 - 2012 / autumn
Then the Canon 7D MK II with two Digic 5 - 2013 /spring
Certainly Digic5 will be used from now on, 7DII might have two of them or even two Digic5+. But that says nothing about MP count...
You are right. I am not sure about 24MP. Could be 21.
What I mean is the specs of the current 7D are different from a 60D. I don't believe people jump from 7D to 70D just because it has more MP than the current 7D (18MP) and just because it hits the market before the 7D MK II. I bought my 7D for Sports. The 60D doesn't match my criteria. I believe it will be the same with the 70D. I can except the lower amount of MP for another 12 months compared to 650D and 70D because their specs still don't match my criteria. At least I think and I hope
Oh, and I think the Digic 5+ is exclusive for the FF. So don't think they put 2 Digic 5+ in the 7D MKII - just my 2cents