This teaser page on EVGA's website cryptically hints at a card that's 'a rocking new graphics card designed by NVIDIA and EVGA to take PhysX to the next level.' In addition,
Bright Side of News reports that the card in question fuses a GeForce GTX 275 GPU with a GeForce GTS 250, with the GTX 275 handling graphics duties while the GTS 250 secondary GPU is dedicated for PhysX. BSN believes EVGA takes the GeForece GTX 295 single-PCB reference design and replaces the second GTX 275 chip with the GTS 250's G92 GPU, which is outfitted with 512MB of memory. The secondary graphics chip is used solely for PhysX: so you can't use it to hook up additional displays. To keep power consumption in check it runs in idle mode when not in use.