There still seems to be a handful of places which haven't sent anything out yet including some top programs (Hopkins, UCLA, Willie B, UWash...).
I also think some places will send out a second round as people start to cancel. In fact I just got an email today from a prestigious program in the South stating I was in the "second to invite group" and may receive an offer later.
Furthermore, many programs have sent out at least some rejections. If you have not received an interview or a rejection I would say you are still in the running. Who knows maybe being in this "second to invite group" could work out.