(the Windows Phone user is the one in the speedboat)
The final version of the Windows Phone developer tools have now been released. These are the ones that you can use to create applications for the Windows Phone Marketplace. They are also of interest to XNA developers because this SDK is also the one used to create XNA 4.0 games for Xbox and Windows PC. They are a free download from here. If you want an ISO image to use for an offline install of the SDK you can find that here.
Oh, and if you want to find out more you really should sign up for our advanced sessions on Windows Phone Development. Andy and I will be reprising our double act (and giving away another private jet) on Tuesday next week. You can sign up here.