In mid-November, Microsoft released a new update to the Zune software and device firmware. The update adds three new games to the Zune device, but doesn’t offer much else. Microsoft is calling the software Zune 3.1 (though the official Zune Web site is still promoting Zune 3.0).
The updates are pretty well covered on Paul Thurrott’s blog. As I said, there wasn’t much added to the new software and firmware except for a few extra games for the device.