What are the new features of XNA Game Studio 4.0?
XNA Game Studio 4.0 is the first toolset for game development on the Windows Phone 7 Series, available in a single download to managed and non-managed developers. This includes the addition of Xbox LIVE APIs that bring popular features from Xbox LIVE to the phone, available to managed developers. All developers have access to the XNA framework, including powerful managed code that helps to create better games faster for Windows Phone 7 Series.