Earlier today we mentioned the recent xf86-video-ati driver commits
and now David Airlie has announced on his blog
that version 6.6.193 of the open-source Radeon driver has been released. Fixed in the xf86-video-ati 6.6.193 driver is 3D acceleration support for the ATI RS480 chipsets when using the newer version of Mesa as well as better VBL support for lowering power consumption. Like most software releases, there is also a number of bug fixes and code cleanups.