As Heidi Klum has taught us, thanks to Project Runway, in fashion you're either in or you're out. In 2008, it feels rather the same way in publishing. This year has seen a reality TV—like changing of the guard at the major houses, with a flurry of top execs leaving (or being pushed out)—Random House, HarperCollins and Hyperion all lost their CEOs. Here's a look at some of those who've come, gone or been promoted... so far.