"We made the decision to make one Game Studio. We think everyone should have access to the same tool," said Chris Satchell, general manager of the XNA organization at Microsoft. "There should be no friction as you move from accessible development to professional development."
Among other improvements, XNA Game Studio 2.0 adds new multiplayer networking APIs, which will allow a developer to take advantage of Xbox Live's network support. The new version of the 360 development is set to arrive by the end of the year along with the first XNA-created title “Schizoid”.