"You'd need to see 5850 mobile chips within about three months in PCs to have any chance of getting them in iMacs in six months time. Right now the 4850 is pretty much the best graphics chip for laptops out there."
Exactly Harmonica....
How in the WORLD is Apple supposed to load their current (new) crop of iMacs with GPUs that don't exist? (They probably have a 100,000 units already built, right?

) The 4850 is going to be a fine card for 99% of what's on the market right now, and most likely 95% for the next 18-24 months. As mentioned earlier, the GPU sector has been hit by the world's economy...slower movement will mean a slower push to maximize the latest hardware by developers. Blizzard (Diablo, WoW, etc) has always been very smart about this as a developer....very playable upon release, even on machines a generation or two old.
Microsoft on the other hand...LOL...I'm a flight sim geek, MFS and XPlane. Those are taxing programs as well. I think these CoreI7 implementations on the 27" iMac with a decent bank of RAM will do plenty to help nudge these "Lowly" 4850s along
Pretty exciting news, IMO! What a bad-ASS machine for 2k!!!! Insane and a possible video editing option in lieu of the Mac Pro.
Count me happy
J