Hi there! I read all comments and I have the same e-mail from BU. I am in the same situation with you, waiting and nothing yet:( My POI told me I have been waitlisted before getting that e-mail which implied positive results and visitation weekend.
I am wondering if the list is short or not, if you have any idea from your contacts, I would appreciate. I am applying for chemical biology and organic divisions by the way, good luck!