I have heard nothing. In results there's record of 1 no, 0 yeses, 0 interviews, and 0 waitlists.
It seems, from the 2020 section of this forum, that last cycle BU had a *very* large official waitlist. At this point my (fully unverified, anxiety-spiral-induced) theory is that they're releasing results on an unofficial waitlist system (which, at least according to Draft, seems to be a thing)/sending results in waves/whatever you want to call it.
Or I'm totally wrong and all offers are out and there's just a delay in certain rejections. Who knows!