Xbox 360 Hard Drive Leaked at 70+ Gigs?

Just when we started believing that the 20GB Xbox 360 drives were big enough to satisfy, along comes the best evidence yet of more spacious disk appendages. Microsoft hasn't officially let the kitty out of the bag, but Plaid Ninja snapped this screenshot at the Xbox Live event tonight. It shows 70 gigs of free space on a 360. If the timing is to coincide with the new download service, we're talking about seeing these things before Q4 is up. Question: How will we transfer games from one HDD to the upgraded drive?

Plaid Ninja [Plaid Ninja's Flickr]