I've started wondering whether the delay is not only because 1) The current products have been considered "good enough" in the face of intermediate processing /

I've started wondering whether the delay is not only because 1) The current products have been considered "good enough" in the face of intermediate processing / power requirement changes in succeeding chip lines... But also because 2) Apple is making the move away from Intel to their own customized ARM processor. The rumor's been around, before. But really, why else not bump the processor and maybe some subsystems, if and in lieu of a more major redesign? P.S. This is just rampant, uninformed speculation pulled from my posterior. And I've no information and limited confidence as to whether such a move could be made sufficiently performant. Still, why not a bump or two, in this intervening time?