The Xbox 360 add-on is aimed for a holiday release, as had been expected. Redmond also touts Windows 7 sales numbers and shows off the latest PCs, including an HP tablet.
The consumer electronics extravaganza formally kicks off with a keynote address by Microsoft's CEO. We'll keep you up-to-the-minute.
Joe Belfiore's move to VP of the Zune group might indicate that the company is thinking about adding more video content to the Zune Marketplace.