This is the link to the Win 7 64 bit driver. Versions for other OSes can also be found on the nVidia driver website. From the "highlights":
"Supports the new GPU-accelerated features in Adobe CS5."
As with all beta drivers, it is not recommended that you install this driver on a production machine. There is one additional change in this driver in that nVidia has converted the XML file nVApps.xml, that controls video settings for individual pieces of software, to a binary file, which cannot easily be modified by the user. A series 257 driver for the Quadro series has not yet been posted, as nVidia generally provides only WHQL versions.
Better wait for the WHQL version to come out, this beta has way too many problems with CS5.
That's my thinking on it also. But it's worth experimenting with it to see how widespread the problems are. With the 257 driver there's also no way of directly editing nVApps.xml until nHancer is updated.There's several other tools that will do this and work with the 257 driver, but in my opinion, it's presently not worth the effort. It might be worthwhile submitting any CS5 bugs that are discovered here:
Thanks for the info.