Forbes says that Intel is "disappointed" with Apple over it's iPhone chip choice. Well duh. Apple is great at learning for growth in areas that are somewhat foreign to them. This is Apple's MO. Work really closely with a company in an industry that they don't have experience in. Turn around in a couple of years and apply what they've learned coupled with their own engineering smarts to do it themselves even better.
Remember the ROKR project with Motorola? Fact finding mission for Apple.
Heck, remember the PARC visits? The rest is Macintosh history.
Apple has it's own really, really small, low-powered chip design IP now in PA Semi. My guess is that they've learned quite a bit about the ins and outs of the silicon business over the past 3 years in working with Intel to design groundbreaking board and chip configurations. Just take a peek at the MacBook Air for reference.