I speculate that a few invites will go out today, we'll obsess over them, wait torturously until next Friday (obsessing the whole time, of course), and finally find out what the AdCom decided, which they could easily have told us a month ago.
I have a theory. AdComs are created from Carl Rove clones. While they are efficient workers and great strategists, they get off on human misery and enjoy torture.