I was waitlisted from BU on Jan. 24th. They said they have accepted ~50 students already and are waiting to hear back from them, and they have ~20 students on the waitlist. Rejections were sent out that day too, so if you haven't heard that's actually a good thing. Depending on how many students actually plan on attending, they will increase the waitlist size as people from the waitlist start getting accepted. You gotta remember that people from the waitlist may not attend as well. I have already given up my spot on the waitlist, as I cannot afford the insane living costs of Boston on top of the crazy tuition. Keep your hopes up guys!