I downloaded the 5.8 release from DriverHeaven yesterday and from the
initial usage its got some significant changes. The only game I've
actually been bothered to play has been Battlefield II these days(that
and Raptor + Commander Keen for old times sake!) but these drivers seem
to make BF2 run a little bit better than the previous release. (256MB
Sapphire X850XT PE - PCiEx)
Download them and take a look, theres lots of changes in this release:
Windows XP Drivers (x86)
Release Notes
EDIT: I had teh Release notes and download links the wrong way... fixed (thanks to Mark22 for telling me!)