To be honest, wheel_of_fire, I think that you may have misinterpreted the email a bit. Chicago tends to make only one round of acceptances, and I've heard that they are accepting an extraordinarily small cohort this year (2-3 total acceptances), so my guess is that they've accepted those two or three candidates, and wait-listed only a handful of others. If one or two of those candidates chooses to go elsewhere, I'll bet that your chances are good. I'd be thrilled if I were you!