i hope it has the power of a gt300 for sure , and then when they go 28/32nm , they can get a dual fermi out , now that would be serious for future games on 2560x1600 . that would be a perfect replacement for a gtx 295 .
but there are doubts : its a bit different from the last year , as 4800 launched after gt200 , and bought a reduction in prices , but what will happen this year ? launch at less prices ? from nvidia's history , they like to launch at sell-your-old-mobike-and-get-this-card prices !
secondly , fermi being an HPC optimized , but how will that play out for gaming and dx11 performance ? perhaps they will use all that dual precision flops and caches and other tidbits , write solid drivers , they can do that , and take the performance bar to newer heights . i think that what they have in mind , they are moving a bit far from gaming only cards as ati said , but they wont "abandon" gaming .
even more future speculation , radeon hd6000 will be radically different from hd5000 .