Resources for Windows Phone 7 development
silverlight-4.0, windows-phone-7, xna
Solution
An excerpt from Programming Windows Phone 7 Series by Charlez Petzold just became available online.
Problem
Windows Phone 7 has been unveiled and MS have announced all details of the development chain at the Mix10 conference. So this could be a good starting point/collection of online resources as they appear EDIT: I've removed the speculation tag now that the covers are off