Nope. I don't think so, but that's my opinion. 3dfx is already spread pretty thin with their current 3-tier product line, the V4, V5 5000/5500 and the future V5 6000. They also have the Rampage coming down (hopefully) soon after the V5 6000. It wouldn't make much sense to make the V5 6000 any more powerful than it already is, or it would steal the show of the Rampage(unless of course Rampage is seriously delayed, like a year or more).
Besides, the Geometry Assist(not TnL assist) simply uses SSE and 3DNow! to speed things up a bit in D3D, rather than VSA-100 hardware.