Salty specs of G92 and G98 hit the web
G92 will have a 256-bit memory interface, will work at 740 MHz (core) and will have 64 Stream Processors. The G92 would have 512MB of GDDR3 memory clocked at 1800MHz and a TDP between the 7900GS and the 7900GTX (quite a large gap).

The card's price would be from $249 to $299 and it would score around 9700 points in 3DMark06 on a system powered by an Intel QX6700 (4 cores at 2.66 GHz).

As for the G98, it would have only 32 Stream processors (like the G84), a 256-bit memory interface, a core clock of 800 MHz, a TDP a little higher than the 8600GTS and a price tag hovering between $169 and $199, making it whether a replacement for the 8600GTS or the card to bring the price of the 8600GTS down close to the price of the Radeon HD 2600XT. This one would score about 7400 in 3DMark06 on the same, CPU-only configuration.
http://www.tcmagazine.com/comments.php?id=15946&catid=2

Zacinam byt opravdu hodne zvedav, co opravdu uvidime v listopadu, protoze ty specifikace k odhadovanym vysledkum opravdu moc nesedi.