Release Highlights:

Fixed a bug that prevented XvMC from initializing in most cases.
Added support for xorg-server video driver ABI version 8, which will be included in the upcoming xorg-server-1.9 series of releases.
Fixed a bug that caused extremely slow rendering of OpenGL applications on X screens other than screen 0 when using a compositing manager.
Fixed a regression introduced after 256.35 that caused stability problems on GPUs such as GeForce GT 240.
Fixed a slow kernel virtual address space leak observed whenstarting and stopping OpenGL, CUDA, or VDPAU applications.
Fixed a bug that left the system susceptible to hangs when running two or more VDPAU applications simultaneously.