I posted this a couple pages back, but I thought I'd post again for the new posters with "delayed decisions." This is after I perused last years forum for PCOM:
Also, for those who are curious and who have been wait listed/delayed decision, it looks like about 10 people on SDN received acceptances late in the game after being waitlisted/delayed, starting from February and some into July.
I did see one person received a rejection later in the game, like July. But for that one person rejected, there were those 10 accepted.
I spoke to my friend who's a first year and she states she knows a handful of current students who were wait listed or their decision was deferred before they were offered acceptances. It seems like they do pull a lot from these lists of people (this is purely an anecdote, I clearly have no statistics). I mentioned the delayed decision to my advisor as well, she said that's a good sign that we're still being strongly considered. I know I was beyond bummed out at my deferred decision, too. However, it seems that there's still a good reason to hope!