From the XNA Creators site -

The XNA Community Games Platform team has announced the first feature of the coming XNA Game Studio 3.0, the ability to build games for the Zune platform.  XNA Game Studio 3.0 allows all game developers to create unique and imaginative games for the entire family of Zune media devices.  This feature gives game developers access to the majority of the XNA framework APIs while retaining a seamless sense of integration with the Zune media experience.



- Mike