Ok, I think everyone needs a time out here.
Mikael, I am sure you mean well, and have excellent points to back up your claims, but please start your own thread discussing DR, banding, comparing sensors and such. It is NOT on-topic here.
The rest of you, don't bite. It turns into a flame war every time.
AND, I would ask you all to keep the tone polite. I know that it is hard when you get emotionally engaged, but for the rest of the forum's sake, please constrain yourselves.
Now, back on-topic: I think 70D and 7D2 will both be APS-C, as will all their successors. When the day comes and Canon goes 5 FF-models, they will no longer be successors of these lines, but rather something new. Like the 6D. (Canon could ofc reuse the names).
I think there will always be a place for pro "sub-FF" sensors, just because of the reach. Canon knows this, and for them, putting a APS-C sensor in the same body as a FF camera is a cost-effective way to create a new camera.
So, I would prepare for APS-C 7D2 and 7D3. I think it is only a question of what they improve every time, not change in sensor size.