You know I'd be a lot less inclined to believe that this was actually a hint if the blog entry wasn't titled "using your head". I'm starting to see how the GDC earned its reputation.
I'm surprised that no one has made any guesstimates regarding the comments about FedEx. What does everyone think of a game involving robots retrieving and balancing boxes on top of the robot (which Dave was obviously trying for himself recently
In short, I don't have a clue. I think I'll just wait until December to twist my brain over this...or at least try and fail miserably in the attempt ^_-
Vale et bona fortuna omnibus!