http://game.amd.com/us-en/drivers_catalyst.aspx
Don’t forget to grab the right batch and avivo drivers which still ahve that stupid marketing page to dig through.
So far for me on a 5770 and a 5450 these drivers are workign fine, can’t say they are great or worse yet as haven’t done a lot of testing BUT thy installed perfectly over the top of the 10.5 and 10.6 preview drivers without a hitch.
Video playback wise they definately see to work with Total meda theatre 3 blu ray edition better, especially with the new 3d video plugin 
just need som ebetter galsses and a beter monitor.
Exerpt of chnages.
I have now got a 5870 vapor-x and it runs fine so far on these drivers.
setting up avivo is a bit of a challenge with the new features especially getting deblocking and noise reduction right.
Apart from this all game sso far run very well especially battlefield bad compamy 2(load times are instant no lag in a single card setup for me)
can’t wait for the catalyst 10.7 though
New Windows Features
Highlights of the ATI Catalyst™ 10.6 Windows release includes:
GPU acceleration of H.264 video content using Adobe® Flash Player 10.1
- AMD GPU acceleration of Adobe® Flash Player 10.1 delivers smooth high definition video playback and reduces system resource utilization on notebook and desktop platforms featuring AMD graphics including:
- ATI Radeon™ HD 4000 and HD 5000 series Graphics
- ATI Mobility Radeon™ HD 4000 series (and higher) Graphics
- ATI Radeon™ HD 3000 series integrated graphics (and higher)
Video De-blocking support
- Reduces blocking artifacts seen in low-bit rate video during playback
- Supported on ATI Radeon™ HD 5000 series Graphics
Mosquito noise removal
- Reduces mosquito noise seen in highly compressed progressive video, during playback
- Supported on ATI Radeon™ HD 5000 series Graphics
Official support for OpenGL 4.0 and OpenGL 3.3
- ATI Catalyst™ 10.6 delivers official support for OpenGL 4.0 on ATI Radeon™ HD 5000 series Graphics
- ATI Catalyst™ 10.6 delivers official support for OpenGL 3.3 on ATI Radeon™ HD series Graphics
New Linux Features
Highlights of the ATI Catalyst™ driver for Linux 10.6 release includes:
Official support for OpenGL 4.0 and OpenGL 3.3
- ATI Catalyst™ 10.6 delivers official support for OpenGL 4.0 on ATI Radeon™ HD 5000 series Graphics
- ATI Catalyst™ 10.6 delivers official support for OpenGL 3.3 on ATI Radeon™ HD series Graphics
Support for new Linux operating systems
- This release of ATI Catalyst™ driver for Linux introduces support for the following new operating systems:
- RHEL 5.5 production support
2D performance enhancements
- ATI Catalyst™ 10.6 delivers a new architecture for 2D acceleration. The new 2D architecture delivers fast windows resizing with Compiz/Visual-Effects and general 2D performance improvements in all AMD supported Linux distributions.
For more information on ATI Catalyst™ 10.6 (for Windows 7, Windows Vista, Windows XP, and Linux versions), including all of the resolved issues in this release, please see the ATI Catalyst™ 10.6 release notes.