ATI has released Catalyst Beta Driver for Windows Vista RC1

ATI is one of the first graphic providers to make a 32 and 64-bit driver that supports the Longhorn Display Driver Model (LDDM) – the Microsoft Vista revolutionary graphic driver standard – as well as the first to provide LDDM drivers for integrated graphics processors. By making LDDM drivers available more than a full year prior to Windows Vista release, ATI provides developers with a stable, feature-enabled and performance-optimized platform for application development. ATI is also the first to provide Catalyst Windows Vista driver feedback via our Catalyst Crew Feedback program.

Product series supported:
Radeon 9500, 9550, 9600, 9650, 9700, 9800, X300, X600, X700, X800, X850 series
Radeon X1300, X1600, X1800, X1900 series
Mobility Radeon 9550, 9600, 9700, 9800, X300, X600, X700, X800 series
Mobility Radeon X1300, X1400, X1600, X1800 series
CrossFire Xpress 3200 series
Radeon Xpress 200, 200M series

Catalyst Beta Driver for Windows Vista RC1