My second book, Microsoft XNA Game Studio 3.0 Unleashed has just left the printers. I received a copy of the book yesterday. It is available for purchase from Amazon and other retailers. This book includes 9 new chapters in 3 new sections. These include chapters on creating games for the Zune, creating multiplayer games and best practices to sell games on the Xbox LIVE Marketplace.
More information about the book can be found in the Unleashed section of the site. The errata for the book has been started and can be found here.
I will be revamping this site and will include forums directly on this site so we do not have to use the Amazon forums. I realized recently that the Amazon forums were country dependant and there were posts I didn't see from the UK. Having the forums on my server should help with that. I'm working diligently to get them up soon.