I have the same question. I'm sure it varies, but do most of the fall interview people get their waitlist notification dec 1st if they're not in? Just curious.
I've heard that a lot of schools send out rejections before or on December 1st, but I think everything is situational...so I'm not sure how much this helps :-/
They can reject you at any time, on Dec 1 if the earliest you will know about acceptances/wait list but even if you have a fall interview it doesn't mean they will notify you of anything on Dec 1. Basically from Dec 1 until the day that school starts school you could hear anything