I chased down, personally tested (and therefore proved to work) a shell-script that downloads and auto-builds a working RPM for the Linux Catalyst driver for openSuSE 11.3 (works with either RC and GM; I personally tested, and am using, the GM RPM built via this script).

Google Translate (English translation via Google of the original German page; the script works in US English openSuSE 11.3 GM, where I tested it)

Why this is important: Unlike owners of earlier AMD GPUs, those of us with HD5xxx-based cards have no option other than the proprietary driver to get any sort of 3D acceleration and compositing; prior to this script, we could not run openSuSE 11.3 at all with compositing (or even 2D direct rendering, which is not supported in the FOSS driver for HD5xxx)