Microsoft XNA Game Studio 3.1 makes it easier than ever to create great video games for Windows-based PCs, Xbox 360 consoles (with an active premium XNA Creators Club subscription), and Zune digital media players.
This release is incremental to XNA Game Studio 3.0 and contains many new features, including avatars, Xbox LIVE Party support, and video as well as enhancements to existing features. For the full list of improvements in this release, see the “What’s New in XNA Game Studio 3.1” section of the documentation once you have installed the product.
Tools and Utilities
Product page: here