The Catalyst Software Suite 10.8 contains the following:

ATI Radeon display driver 8.762
HydraVision for both Windows XP, Vista and Windows 7
Southbridge/IXP Driver
ATI Catalyst Control Center Version 8.762
New Features:

OpenGL ES 2.0 support - ATI Catalyst 10.8 delivers full support for OpenGL ES 2.0 specification

Enables 3D accelerated graphics within a web browser that supports OpenGL ES 2.0
Supported on Windows XP, Windows Vista, and Windows 7
Video Quality default options

The Default video options for ATI Catalyst have been greatly enhanced to deliver
the best quality video viewing experience. Users can also choose to apply these
settings to Internet Video via a new checkbox control within the ATI Catalyst
Control Center
In the “Advanced Color” section, the following defaults are now enabled:
Color vibrance (default = 40)
Flesh tone correction (default = 50)
Brighter Whites
In the “Advanced Quality” section, the following defaults are now enabled:
Edge-enhancement (default = 25)
De-noise (default = 64)
Mosquito Noise Reduction (default = 50)
De-blocking (default = 50)
Performance enhancement for Eyefinity Quad ATI CrossFireX
configurations

Performance has been greatly improved for users running with ATI Eyefinity on a Quad ATI CrossFireX configuration
Anti-Aliasing support for StarCraft II
ATI Catalyst Control Center enabled Anti-Aliasing is now available for StarCraft
II
Catalyst Application Profiles - The following application profiles are available with this release of Catalyst 10.8

Singularity – CrossFire profile update
Mafia 2 – CrossFire profile update
Final Fantasy XIV Benchmark – new CrossFire profile
Lord of the Rings Online – new CrossFire profile
Aliens Vs. Predator – CrossFire profile update
Performance Improvements - The following performance gains are noticed with this release of Catalyst 10.8:

Far Cry 2
Performance increases 2-6% on ATI Radeon HD 5800 Series single and
CrossFire configurations
Performance increases 2-4% on ATI Radeon HD 5700 Series single and
CrossFire configurations
Performance increases 3-8% on ATI Radeon HD 4800 Series single and
CrossFire configurations
Left 4 Dead 2
Performance increases 3-5% on CrossFire ATI Radeon HD 5800 series and
CrossFire ATI Radeon HD 5700 series configurations
Stormrise
Performance increases 5-10% on ATI Radeon HD 5600 series and ATI
Radeon HD 5500 series configurations