Chalk this up as rumour, but what a rumour!
Semiaccurate is reporting that Apple is going to show Intel the door, not only that but it`s a done deal.
"The short story is that Apple is moving the laptop line, and presumably desktops too, to ARM based chips as soon as possible. With A15/Eagle allowing more than 32-bit memory access, things look up, but it seems silly to do so before the full 64 bit cores come in the following generation. Nvidia is directly telling certain favored analysts that they will have Denver out in Q4 of 2012, maybe Q1/2013, and that uses the full on 64-bit ARM instruction set. It won’t be out by then, but that gives you a good estimation of when that ISA will break cover from one vendor or other. Think mid-2013.
At that point, Apple can move to ARM without worrying about obsoleting code with an ISA that is on the verge of changing, and no memory overhead worries either. Basically, it looks like the perfect time. Ironically, SemiAccurate’s moles tell us that the boys on infinite loop are planning to move laptops to ARM at about that time. Coincidence? Nope."
Interesting, considering Apple was a big shareholder of ARM holdings in the past (and in part ARM was founded by Apple along with Acorn Computers and VLSI Technology) Apple has always been interested in it`s own processor designs so if this rumour is true it would`nt come as much of a surprise.