Zune Firmware 3.1 Released, Comes With Three Free GamesThe Zune 3.1 update is available now. It includes some major navigation updates to Zune Social, three free games (Checkers, Sudoku and Space Battle) and "incremental" stability/performance updates to the Zune PC software and Zune firmware. It all sounds like good stuff to us, so go update and succumb to the Sudoku revolution today! [Zune Insider]