A NVIDIA CUDA roadmap found its way to Expreview. The slide reveals CUDA 2.1 will be released sometime this month and CUDA 3.0 is slated for early Q4 2009. By late Q1 2009 there will also be a CUDA 2.2 update and CUDA 2.3 is planned for mid-2009. Info about what these updates have to offer isn't available yet though.
CUDA has integrated OpenCL 1.0 standard support, and is about to add DirectX 11 Compute Shader support. As an integration of OpenCL and DX11 computing, CUDA offers the best GPU computing choice for developers.