I'd like to mention that even though this driver release has support for dual-core, this release does NOT come with Control Panel anymore. The last version to come with Control Panel is 5.10. So if you're against .NET Framework, you're half screwed there. I hear ATi Tool is an alternative but I have yet to test this.
Also note that you're going to need at LEAST 56MB or so to install Catalyst Control Center. That's my base install and I have it custom installed to not include the Help files and the skins. I still don't like having to use their Control Center to get my custom setup going. 55+MB compared to possibly 30MB from nVIDIA's drivers, that's a heavy price to pay just to have a complete driver install. Makes me wish I have a GeForce 6600GT instead of this R9800Pro now... because I'd rather deal with nVIDIA's drivers than ATi's.