The XNA team released their first XNA Game Studio Express Beta release earlier today. You can learn more about it and download it for free here (below is a screenshot from a fun app build with it).
This release works on top of the free Visual C# Express Edition, and provides the ability to build games using C# and .NET that target both Windows and the XBOX 360 (we did the work to port a .NET execution engine with PowerPC JIT support to the XBOX to enable this).
The XNA Framework ships with the VS package and provides a managed code library for creating rich graphics, and incorporating 3D content into games. I'm looking forward to having some fun with this. :-)
You can download it for free here.
Enjoy,
Scott
