In time for the X.Org 7.5
release (whenever that may come), David Airlie has put out new driver releases for nineteen of the X.Org video drivers. These aren't updates to the mainline ATI/AMD, Intel, or even NVIDIA drivers, but some of the drivers for less common graphics hardware.
The X.Org drivers that were updated include those for APM, AST, Cirrus, Fbdev, Glint, i128, i740, Mach64, MGA, NeoMagic, r128, s3virge, S3, Savage, SiS USB, SiS, TdFx, VESA, and Voodoo hardware. The updates to these drivers range from simple bug fixes and support for xextproto 7.1 to other compatibility fixes.
Yesterday there was also an update released to the evdev driver as well as the VMware video driver for virtualized guest Linux operating systems.
The release announcements for each of these driver updates can be found from the xorg-announce July archives