You know that feeling you get when your boss asks your other boss if he's heard the news yet, and your other boss observes that there are big changes coming, but nobody can be arsed to tell you what's going on even though it's clearly going to involve rearranging the department?
And I'm pretty sure they've both been told not to talk about it to anyone who isn't in the loop already (i.e. me) because that might be bad for morale.
Update: I went and talked to the department head (basically just walked in and asked him "What is it my boss very carefully isn't telling me?") and I may have been wrong about the reasoning on this. He seems pretty nervous about how everything was going to shake out, so it's possible that he's just trying to hit the higher-ups one at a time so they can ask questions, lodge objections, and get their primal screams out in private. He may actually be worried that if he announces a bunch of sweeping changes all at once (even though we all pretty much know they're coming, and have known for several weeks now) he'll have half the department quit on the spot.
I still don't know what's going on, though.