There are two different versions of CCC, one for old net framework users and one for the latest net framework 4.0.
Try both, one should hopefully work for you.
http://www2.ati.com/drivers/beta/AMD_Catalyst_12.11_Beta6.exe
Or
http://www2.ati.com/drivers/beta/AMD_Catalyst_12.11_Beta6_dotNET4.exe (net 4.0)
No they're not, the reason for that is caps are updated more frequently. Sometimes you get 2-3 new caps per month as new games come out.
The good thing about this is installing-un-installing caps takes about 3 seconds, not including the restart.
But i would expect that when a new driver gets release, BETA or not, that they would include the latest CAPs.
If i just install the driver and CCC does that mean i don't have any CAPs at all?
Either way i'll give the 12.10 CAPs a go.