I am friends with one of Brown's current graduate students, who told me that all prospective students (including waitlisted) have been invited and are being flown out in a few weeks. I guess I did not get in. :cry: She said that Brown does not invite everybody from their shortlist even anymore, let alone their waitlist.
Also, one of my friends was accepted at Chicago and Michigan (and Penn and UNC, and Washington) so I know that those schools at least have notified.