It would seem that the FX 5800, ultra and none ultra versions, are making their way into the retail channel. But very, very slowly.
Now that could be down to TSMC not being able to ramp up production of the NV30, and so only a few are trickling out.
Or maybe nvidia are busting a gut to get the market swamped with 5600's and 5200's where they can make some real cash, and for the time being is letting the high end do what it wants. Maybe they are confident that their reputation will be enough to carry them through this patch.
Then again, we may never even see the NV30 is any great numbers at all. Maybe the NV35 will be slipped in as the high end gpu this summer and replace the NV30 that never was.
Total speculation mode
nvidia knew that the NV30 was going to be a little... dissapointing!!, but really needed to get to grips with the .13u process so that they could produce a real killer given time. But ATi suprised them by bringing out with something that was actually good and fast.
Suddenly nvidia realised that they actually might need to compete this quarter so they virtually launch a card that on paper and in the press is an ATi killer. Just like everyone is expecting, only it never actually arrives. Because nvidia knows that it stinks and can't really compete. It's a test piece and should never have seen the light of day. But lots of people sit around waiting for the card to arrive, meanwhile nvidia concentrate on the revenue makers and suddenly get nice feed back from a new and recent foundry partner about their refresh chip.
Which is everything that the NV30 should have been and a little bit more, just for sh1ts and giggles. And this is what we will see instead of the NV30. So it was never really MIA because, apart froma few collectors items, it was never, and will never be, IA never mind M!!
Total Speculation Off