I posted the other acceptance. It came by email, but it was very informal, and I only got it at 5 30 pm (ET). No details yet, just a faculty member giving me a heads up. So I agree with westcoast, they're very probably not done notifying.
Also, my previous source on Harvard (the one who claimed decisions were being made last Friday) said it is very likely that notices will be out by this Friday. And at least a first batch of decisions has been made. Then again, my previous lead was disputed by someone on the forum, so take it with a pinch of salt...