To all those waitlisted: over the next three weeks the admissions committee will be re-evaluating your applications to rank you on the wait list. Beginning May 1st, as current accepted students reject their offers, they will be sending out acceptances starting at the top of the list. It's hard to say how many people they'll pull off, but historically UC Davis has pulled many (though last year seemed to be an exception). Basically, if you're on the waitlist, don't worry too much (easier said than done obviously)!