For interested XNA users there's this very interesting how to project that's in the works here:
http://roecode.wordpress.com/xna-gameengine-development-series/He's working on the series with what appears to be very little input and often says at the bottom of articles that he'd love more to both give better coverage of all the issues and to garner interest to write many more articles.
I think this guy is going somewhere good with this xna series that will end up being good for the independent game development community especially given Microsoft's recent productions with xbla and the like.
That being said I'm very interested in getting this guy's efforts some comments from interested people who can give the right kind of input or ask the best questions.