Since both consoles use 6-7 CPU cores and DX12 seems to emphasize better multicore utilization, do you think we'll see requirements for greater numbers of CPU cores for PC games over the next few years? I may be off base here because I don't know much about this sort of thing.
You are exactly right. Going for an i5 for four cores or even an i7 with hyper threading, a process where the CPU simulates more cores is preferable.
Counterpoint being, the processors in both consoles are so weak the i5/i7 line are veritable supercomputers in comparison.