Here's the changelog:
Adds GPU-acceleration for smoother online HD videos with the new Adobe Flash 10.1 beta. Learn more here. Adds support for DirectCompute with Windows 7. Adds support for OpenGL 3.2. Adds support for OpenCL 1.0 (Open Computing Language). Adds support for CUDA Toolkit 3.0 features and performance enhancements. See CUDA Zone for more details. Adds SLI and multi-GPU support for many top new gaming titles including Borderlands, Call of Duty: Modern Warfare 2, FIFA Soccer 10, and more. Includes numerous bug fixes including improved performance for Need for Speed: Shift. Refer to the release notes on the documentation tab for information about the key bug fixes in this release. Installs NVIDIA PhysX System Software v9.09.0814.