It’s been a long-standing rumor that Apple will switch to its own, proprietary ‘A’ series of ARM-based chips in its MacBook and desktop machines. Currently, Apple relies heavily on Intel to provide processors for its computers — the MacBook specifically.
In terms of the MacBook, a recent interview with the director of Intel’s Ultrabook group shows that Intel sees Apple switching to ARM processors as a very real threat. There could very well be a day when all Apple products run on the same series of chips — and that series will be exclusively made by Apple.