Yea the GTX580. Will be coming on Nov 8th according to Fudzilla.
Basically this is now the true potential of the Fermi chip -- i.e. the GTX 4 series. If you guys remember, that was thing that got delayed by six months and then came too hot and too power hungry. But it was an amazing piece of tech... the most GPGPU we had ever seen.
As amazing as it was, and as much as everyone was drooling over it, it just wasn't good enough for gamers.
Well, it looks like the GTX580 is a refinement of that architecture.
The cooler for that thing has gone through refinement as well. It is now a vapor chamber.
edit:
It is now a vapor chamber, and is helping the 580 run cooler than the 280 even!
http://www.theinquirer.net/inquirer/news/1044181/how-heatpipes-vapor-chambersThey haven't said anything about power though.