AMD has this afternoon released the Catalyst 11.6 Linux driver.
The Catalyst 11.6 for Linux build isn't particularly exciting. Release notes for the 11.6 driver haven't been made publicly available yet, but if they do emerge, they'll basically say there's installer/uninstaller improvements, support for reading the highest available memory clock from AMDCCCLE, and some other minor changes / bug-fixes. That's about it.
The Catalyst 11.6 binary blob for Linux x86/x86_64 can be downloaded from this web-page