XNA 3.0 beta will feature (among other things) support for the Zune. ZuDoKu is our first attempt at a project targeting that platform. It's Zune SuDoKu (ZuDoKu)
This project is being set up in anticipation of the eventual release of XNA Game Studio 3.0 (beta). Initial work will be done in XNA Game Studio 2.0 and then ported over to the Zune device once it is ready and the 3.0 functionality (Zune Support) is realized.