I doubt if Apple would willingly make a split with either NVIDIA, ATI or Intel unless they didn't have a choice. There is too much benefit to having the competition and leverage involved.

I'm still having problems with my MacBook Pro 17" and a 30" Apple Cinema Display. Any dark background shows up horizontal "sparklies" that flash around the screen (like interference on an old TV). Apple tech (Store Guru) says it's a known problem and Apple will come up with an NVIDIA firmware patch to fix it. Problem is episodic and may be heat related but does seem like interference. Since the DVI signal is digital, if it is interference, this must be at the chip level (before encoding) in the MBP or in the display itself (which works fine with non NVIDIA video sources).

The problem was replicated at the Apple Store. My Apple 30" display was checked and verified up to spec. as was the MiniDVI adapter.

I wonder, though, if the problem is in the NVIDIA chip. If so, and if NVIDIA are unable to fix it, the issue could hardly be allowed to migrate to Apple's future flagship laptop products.

Sample video of problem:
http://www.softekpartners.com/NvidiaMBP1730.mov

trying to cause media problems for Apple. They pull these stories out of their butts because they have nothing better to do.