I have applied to wake, am on the waitlist, and my best friend is a second year there, and I know quite a few other students there. If you call before they actually send out email/update on the web/letters, they won't tell you. However, on the day that they update the email/webpage, they will tell you. They just will say we're mailling/updating soon. Generally decisions/updates are posted the following week on monday/tuesday, so you'll get the email/web update before you get an actual mail copy. Stay strong man, this is my third year applying, and I've been on the waitlist at wake for a little less than a month now.
Cheers,
A (Tar) Heel Among Wolves