I was originally going to link to the Mims memo, but I noticed that it had a few inaccuracies at the time of posting, so I opted for the Verge's recap - looks like the original's been updated (http://www.technologyreview.com/blog/mimssbits/27776/).

(Very excited about this whole thing, btw. Have been hearing rumors around town about a bunch of MSL folks moving up north to work on something very cool...have been dying to find out what that something cool is.)