Up on SLiZONE! Here's what nVidia had to say about these:

http://www.slizone.com/object/slizone_quad_beta.html]http://www.slizone.com/object/slizone_quad_beta.html

The NVIDIA GeForce 7950 GX2 supports NVIDIA SLI technology, allowing
gamers to put two of these graphics cards in a single system with an
NVIDIA nForce SLI motherboard.

We have made the ForceWare Beta 91.37 drivers available today on
www.SLIZone.com. The purpose of this Beta release is for end users to
begin testing Quad NVIDIA SLI and test it on a broad spectrum of PC
configurations. End users will have the ability to submit problem
reports and discuss their testing in forums. Please look for information
on how get feedback to NVIDIA on the Quad NVIDIA SLI Beta driver
download page http://www.slizone.com/object/slizone_quad_beta.html.

The new BETA drivers are not final and are not intended for a review,
benchmark testing, or production as the results are subject to change
with the final drivers.