Free ebook: Programming Windows Phone 7

Today, the free ebook, Programming Windows Phone 7, by Charles Petzold, was announced available for download.  It's a great book on programming Windows Phone 7 that covers both Silverlight and XNA, and soon will also be available  (for sale) in fully-indexed print editions.  For more details, please read the article at the Microsoft Press blog, Free ebook: Programming Windows Phone 7, by Charles Petzold.