The latest Catalyst drivers for AMD's Radeon graphics cards are out on the web. As always, all you need to do is head to the drivers section of AMD's Game website and download the package corresponding to your operating system and graphics hardware. Drivers are available for Windows 7, Windows Vista, and Windows XP in both 32-bit and 64-bit flavors.
Unlike the 9.8 drivers, which brought CrossFireX performance improvements for users of AMD chipsets, the Catalyst 9.9 update has more of a maintenance release vibe. In AMD's words, highlights include:
Anti-Aliasing support for Ghostbusters ATI CrossFireX™ support for Resident Evil 5 Graphics corruption fix for Sims 3 Catalyst Control Center - Basic now responds properly after exiting Quick Adjust Video Settings Edge enhancement and de-noise sliders in Catalyst Control Center no longer lags or appears out of sync with mouse movement Launching Hotkeys Manager in Catalyst Control Center no longer causes an unhandled exception error The "Desktop Rotation" page in Catalyst Control Center no longer shows additional information for the second display when the secondary adapter is connected HDMI is now detected properly as DTV (HDMI) instead of DTV (DVI) when the HDMI display is hotplugged for the first time Catalyst Control Center no longer displays error message when specific HDMI displays are hot unplugged and hotplugged back Intermittent failures no longer occur with MediaShow Espresso once a transcoding process has been completed
Detailed release notes can be downloaded here in PDF format.
The Catalyst 9.9 package for Linux isn't out quite yet—you'll be able to get it from the AMD Graphics Drivers & Software page when it is—but AMD says it has added production support for openSUSE 11.1, not to mention "early look support" for SuSE Linux Enterprise Desktop and Enterprise Server 10 SP3 distributions.