See my other thread regarding my experience, but I did install the drivers from above and they work perfectly. No need to wait for 10.5.7. Install and enjoy! 
Couple of questions for you guys who got them installed so far-
How's the noise while working with OS X in general (non-gaming)? If you had the stock radeon 2600xt and could compare it to that, that would be great. Also, how is the noise while gaming/pushing the card?
Also, not sure if there are any super-enthusiasts out there who may have flashed a pc radeon 4870, but I kept reading about link speeds and one guy who got the official apple radeon 4870 said it runs at 5, but I guess the pc versions are running at a lower speed? Any word on what that might mean in terms of performance and whether that would be fixed with a later driver update? (just trying to justify the ridiculous price premium of the 'official' card from apple vs a normal flashed pc one -- $350 for a 512mb vs $170 for a 1gig card). Thanks!
It is louder then my 2600xt was and also louder then my 8800GT was non gaming. I have noticed no real increase in noise pushing the card. In windows, the temps are avrg 50C and under load 70C. Fan is not increasing all that much at those temps. I have no idea under OSX as no VGA temp monitoring I can find.
Yes the link speed is 5GT/S with the card from Apple. Not sure if it makes a difference or not.
Just got a call from apple, they apologized for shipping the card to early, and told me the drivers will be available VERY SHORTLY
Hmm.. cant wait
So far all the flashed 4870s are linked at 2.5GT/s, as opposed to the Apple-supplied cards which link at 5.0GT/s. No one is sure if this is something that will be fixed by 10.5.7 when it comes out, or not. If you're thinking about flashing a card (it's really not that hard), wait until 10.5.7 is out and there will be a much more stable environment to work with.Also, not sure if there are any super-enthusiasts out there who may have flashed a pc radeon 4870, but I kept reading about link speeds and one guy who got the official apple radeon 4870 said it runs at 5, but I guess the pc versions are running at a lower speed? Any word on what that might mean in terms of performance and whether that would be fixed with a later driver update?
Woman called from apple today, told me that My card was shipped without necessary software and that it should be released "soon."
I pressed "when", she said she was sorry but she didn't know.
I didn't volunteer I'd already downloaded the drivers as noted above.
Anyone else get a phone call?
while i agree with that, i am happy to have my card now since someone has posted the MP09 drivers.
they called me also and actually almost caused me some trouble because i did not tell my wife i made that particular expenditure![]()
since you have the 8800 it should be not problem to wait, am actually wondering why 8800 owners would buy the 4870 for just a little improvement in speed.. and maybe none at all with games. those of us upgrading from the 2600 have more a "need".
to pprior, yes i know honesty is the best policy.. was just feeling a bit sneaky and it's hard to explain the "need" for a new video card to a non computer person. darn that apple for almost blowing my cover.
... 8800 owners would buy the 4870 for just a little improvement in speed.. and maybe none at all with games...