It seems the ole Internet is at it again. Information regarding a AMD/ATI's RV680 -- set for release late next month or early Febuary -- has popped up online. These appear to be official slides, and the information seems reasonable enough to be trusted.
As expected, this card is HD 3870 with 2 GPU's. If you look through the red plastic coverings you can make the outlines of both heatsinks in the first slide here. The RV680 is CrossFireX compatible, so it'll be interesting to see what 4 of these cards working in tandem will be capable off. With each card on its own offering over a terraflop of computational performance, we are talking some pretty serious firepower.