That's just software.
But you should be aware that if a full frame camera gets exactly the same AF system as the 7D Mark II, then relative coverage will be less, due to the larger frame to cover. There are optical/physical limitations to how far from the optical center you can go with AF points. Now Canon seems to have found a way to stretch this a bit further, but still, using the same technology will not give the same relative coverage when the frame is larger.
To see this most efficiently, compare the coverage of the AF system in the 1Ds Mark III and the 1D Mark III. They had identical AF systems, but due to the difference in sensor size, relative coverage was still different.