http://videogame2play.com/2007/04/06/xbox-update-details/
New Updates
- Your contact list will now integrate Windows Live Messenger, and show joinable session status.
- Messenger contacts can see what game you're playing, and your gamertag.
- Marketplace will now have its own blade, which will be skinned independent of your theme.
- Users will now get inline achievement updates.
- Low-power download mode and auto-shutdown.
- You can watch partially downloaded movies.
- You can text chat messenger six friends playing games watching movies.
- Multiple tweaks on the user interface.
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