Yea, I don't think mine was a formal indication of being on the waitlist either, my old professor just emailed me, probably as a courtesy since she was my thesis advisor and I've been bugging her for the past 3 years. She said that visit day was March 17th for everyone that got accepted first round if that helps with a timeline. Also, I'm East Asian History too, so that probably means that they've decided on the East Asian admits if they got a wait list goin. Hope that helps!