Nvidia confirms the GTX 580

[Sam_oslo]

No, AMD released a NEW CHIP.. That they called it 6800 instead of 6700 has nothing to do with it. 6800 does have, in fact, better tesselation than 5800, among other features. This GF110 just looks like a GF100 done right, and with a bifier cooler.

Nobody is saying 68xx didn't introduce changes, it has evolved and got better, but we all have expectations about performance-gain and power usage for a new generation, that usually requires a shrink to achieve.
As a minimum 6870 should beat 5870 to deserve it. It didn't happen, so it's a "fake" new generation, for sure.

It remains to be seen if Cayman or GTX580 can deserve a new first-digit, but AMD has already started the number-game in this round. So it won't surprise me if none of them could stand to the expectations for a new generation. We have to wait and see.