With the new 18 micrometer (or whatnot) process, first, APS-C (according to Northlight):
7D MK II - 2 stop improved ISO, I stop better DR, better AF, all manner of other goodies
Then, wheedle that down to the rest ofthe mob, the 70D, the next rebel...
Then, with the process down, out comes the 42 mp camera everyone talks about. How do I know 42? Hitchhiker's Guide. It will basically replace the old 1DsIII.
At some point, they realize the madness of their ways and come our with a 1D mk IV replacement (for real, the 1DX isn't...). It could be APS-H, but I think it will be APS-C, and much like the 7D mk II, except more expensive and Uber.
And then the 7D mk III will come out, and all the rest of the photographic world will tremble!