I am trying to update the drivers for my Radeon HD5770 card (which is supported by the latest drivers) to use the Catalyst 12.11 beta drivers. Here
it's noted that Ubuntu now supports experimental (beta) drivers. However, the drivers tab under software sources still only lists two drivers, fglrx and fglrx-updates, no fglrx-experimental like the links mention. Do I have to do something to make the beta drivers appear in the list?