I'm looking forward to XNA express edition. This is the first big news since Wonder Witch amd Saturn Basic for developers who have forgotten to enjoy game development. And, this will become new purpose for Buddha project, which is C# simple game engine. We have continued to develop Buddha as 'easy to use' 3D scene graph engine. Buddha makes it possible to develop the PICOPICO 3D game easily. We will try to remake Buddha for XNA and XBOX360.
Well, a PICOPICO 3D game means a simple 3D short game like a classic arcade.