It looks like NVIDIA's G80 GPU may be delayed even further.
We also know that the G80 tape out was a success and that the silicon is fine but Nvidia probably wants to tweak its chip as much as it can as it has a nasty competitor to fight. The R600 looks really good on paper but the good news for Nvidia is that ATI has already delayed its chip.
Nvidia still has the performance crown with very successful Geforce 7950 GX2 dual chip card and ATI won't have anything that can beat it, at least not soon and not by the end of the year. ATI is hurting Nvidia on the price front as the fastest ATI is around €400 while the fastest Nvidia is at €500 or so. And the worst thing is that Quad SLI performance still sucks so you can forget about the buying the second 7950 GX2 card.