Microsoft has been releasing some juicy details about their upcoming mobile OS. With a huge focus on making lives of developer’s easier, they have announced that many of the familiar beneficial qualities of Silverlight and XNA will be made available in the Windows 7 Mobile SDK. The demos so far show some impressive performance in 3D applications.
Windows Phone specific versions of Visual Studio 2010, Expression Blend 4, XNA Game Studio 4.0 are available at the Microsoft Windows Phone Development site
A Windows Phone developer license is $99 and it costs $99 per application to submit to the Windows Mobile app store.
Read more about XNA with Multi-Touch support at Bit-Tech
MIX10 coverage from Anandtech