Apple + AMD kinda makes sense. I think the biggest reason that Apple is moving to AMD is because Intel is being such a dick about licensing its chipset technology to Nvidia. If Nvidia can't make chipsets for the latest Intel processors, than Apple has a split: it can't use Nvidia for lower-end systems that use on-board graphics, and Intel doesn't have a high-end graphics solution, so apple would have to start catering to two different types of systems, something it doesn't like doing.
AMD offers solutions across the board, from Fusion to chipsets with on-board graphics to high-end graphics cards (both consumer and professional). AMD offers the one-stop shopping so popular with Apple.
Not that Intel cares, but this is just another spot where their "keep everything Intel" attitude is hurting, not helping.