According to VR-Zone, the R600's rumored March introduction will be a paper launch. The site says the card won't actually hit stores until April, which would be roughly five months after the hard launch of Nvidia's GeForce 8800-series cards in early November 2006. VR-Zone says AMD is also prepping R600 derivatives dubbed R630 for the mid-range market and R610 for the low-end, and that those GPUs will be launched in April, with availability in May.

Maybe they are witnessing the driver nightmare that nVidia is going through with their DirectX 10 cards and Vista and is polishing their drivers accordingly. Anyway, no big deal, I don't see there being any real quantity of games that justify a new OS and video card until late this year at least.