writes "In a leaked video Microsoft have outlined Windows Phone 8 and its all change. Instead of building on WP7 the new version uses Windows 8 and provides a way to run native apps and Silverlight apps alongside. What this means is that only native WinRT apps will be able to run on the desktop, mobile and phone — thus making the existing 100,000 Silverlight apps legacy in one move. Any developer with a brain can see that while it might be worth working on an existing Silverlight WP7 app any new projects should be WinRT native apps.
The whole thing is a mess and Microsoft can't really make a move that will please everyone. It would have been so much easier if they had stuck to Silverlight and consolidated their position with Silverlight on the desktop, tablets and phones instead of tearing it all up and starting again."Link to Original Source