Hey guys, remember that apple is both a hardware and a software company, and that they design their software to compliment
their hardware.
With that being said intel is designing chipsets to appeal to the masses of computer platforms and builders. Apple may be looking to improve upon their own hardware, and optimizing the software for it specifically while still incorporating the #1 chip builder intel for the actual CPU.
This is just a thought, as Intel designs chipsets for the masses, and not apple. Apple's focus on performance with the concept of snow leopard is really good to hear, and this chipset move could be what really sets apple's performance apart from any other manufacturers.
These are just my thoughts.