Windows Vista will support Physics solutions of all forms. Physics engines can execute on CPU, GPU or a custom hardware. With the support for HLSL and DirectX 10, Windows Vista has an awesome platform to enable Physics on the GPU. Multiple GPU support (LDA – Linked Display Adapters e.g. SLI and Crossfire) enable game engines to distribute their graphics and physics loads across multiple GPUs.
The interview is quite lengthy, and is heavily Microsoft oriented, but is well worth the read. A list of some “showcase” DX10 titles is at the end, including Halo 2 for the PC, which many people have been wondering about for a while.