yea, and the 5d3 AF ,by itself, is no slouch and a reasonably capable sports body in its own right. to avoid being a yawn, 7d2 will have to improve upon the 7D in a way similar to the 5D3/5D2.
If the 7Dmk2 is going to relate to the 5Dmk3 as the 7D classic related to the 5Dmk2, they will have to do some remarkable improvements to its "sports capabilities" (as the 5Dmk3 is a significant improvement over the 5Dmk2 in this respect). I dont see how they could do that without throwing in some new, exciting technology (similar to what they did with the on-sensor PDAF of the 650D).
On the other hand, Canon (and Nikon) seems to be reshuffling line-ups all over, so perhaps the 7Dmk2 will instead be targeted at landscape and macro photographers? :-)
-h
I believe 7D2 will be more related to 1DX as a action/sports/wildlife camera rather the 5D3. I believe the 70D will be related to the 5D3.
In the past were: 1DS3 - flagship; 1D4 ( pro body for sports and action) 5D2 as all around affordable FF.
Now we have: 1Dx - flagship; 5D3 as all around FF, and the APS-C bodies.
It's missing something. The missing link may be a big MP body dedicated to studio/landscapes or a sports/wildlife camera with a lower price than the flagship.
Who knows maybe we will see both 
exactly. I'd suggest that both are missing links: The Big MP body-almost-medium-format-answer-to-the-D800 may be the 6D. the sports camera with a lower price than the flagship is more difficult to figure out because of what Canon did to the 1D4.
The 1Dx embodied the stated changes in Canon's strategy, which was to merge the 1D and 1Ds lines. And merge they did -- the 1Dx has best sports/wildlife capabilities and IQ combination to date. But it is missing one feature: Reach. A sports/wildlife camera with a lower price than the flagship would, imho, be either of these two possibilities:
1. If Canon expects the sports togs to carry a 2nd body, it would essentially be a 1D4 successor -- a king of the crops, and something capable of putting "more pixels on the image" to produce
convincingly better IQ than cropping the best FF output for the equivalent FOV . We've hashed this ad nausium, but imho Canon can't do that with today's "C" sensors. It would have to be an H or some new and distruptive C sensor that no one has yet even rumored about
2. If Canon expects the sports togs to "do without the reach", and carry two 1Dx bodies, then in this case the bar is lower and the "sports/wildlife camera with a price tag lower than the flagship" is a prosumer APS-C, highly capable sports body with only a small improvement in IQ compared to cropping a FF for equivalent FOV. They could even use the T4i sensor, which of course would be a big yawn.