I'm not trying to be a downer, but I know that NYU already sent out their acceptances (in past years they haven't had a waitlist) and that UMD has already invited people to their open house and done interviews with the people they were considering for acceptance. I would say that if, for these programs at least, if you haven't heard from them it's a likely rejection. You won't know for sure without contacting them, though, so don't take my word as an absolute. Just trying to add more info.