This news comes straight from China via the Google translator. Luckily the specs themselves require no translation. 8600 Ultra and 8600 GT specifications. 8300 GT and 8300 GS specifications. Apparently the 8600 Ultra has a MSRP of $179 and will launch in Q3 of 2007. The 8600 GT has a MSRP of $149 and will launch this May along with the 8300 GT which will have a MSRP of between $89 and $99. The 8300 GS is reported to have a MSRP of $69 to $79 and has no launch date specified.
Last but not least, enjoy this XFX 8600 (could be GT or Ultra) pic.