Gamerscore Blog has leaked Microsoft's announcements in their video RSS feed -- below is a list of games we'll see at the press conference today:
So looks like a sequel/sidequel to Portal is in the works for Xbox 360, as is another Uno game, and a Galaga sequel. More news to come, including what we can get out of the video that accompanies the leaked post.

Thanks, William D.!

This article was originally published on Joystiq.

E308: Microsoft Press Conference Preview