At the usual location http://people.freedesktop.org/~agd5f/radeon_ucode/ on 23rd Aug several new firmware such as RV770_uvd.bin RS780_uvd.bin R600_uvd.bin have been released with the purpose to expose video acceleration via the Gallium3D VDPAU state tracker for upcoming kernel/mesa drivers. as they are brand new files, that's no risk for existent users.
In CVS.