Rumor: Xbox 360 Will Support USB Mass Storage

Learning from what looks like legitimate Microsoft documentation, the Xbox 360 will soon support external USB mass storage through an official System Update.
From the screenshots of it, the 360 will support pretty much any size of external hard drive (over 1GB), and this drive can be partitioned to be partially or fully dedicated to Xbox 360 files—including DLC, XBLA titles, games on demand, general game updates, and even the media like movies.