I'm back in Ottawa and I wanted to provide some more more information on XNA Game studio express. A lot of questions were asked during the conference about how the XBox 360 development of games for the retail unit would work. Here's the answer:
P.S. as an XBox 360 game develooper you can't sell these games either... the games you develop using XNA Game Studio Express are are for non-commercial usage only.
You can also find lots of good information from the following links:
XNA Dev Center on MSDN: http://msdn.microsoft.com/directx/xna/
Blog from Mitch Walker, PM on XNA framework: http://blogs.msdn.com/mitchw/
Blog from Michael Klucher, PM on XNA frameork: http://blogs.msdn.com/mklucher/
Blog of the XNA team: http://blogs.msdn.com/xna/
I will post also post 2 podcasts I did with Mitch Walker from Microsoft and Josh Williams from Garage Games very soon.