People are melting down on GradCafe about this. Chill out everyone!
I think Stanford usually has an early 1st round. I didn't apply there, but I went through the last two years of gradcafe results for all my schools the other day and put together an "expected 1st round offers" calendar. it seems to me that the season kicks off the first week of February, picks up steam through the month, and most schools make a round of offers by early/mid March. Of course there's variation, wait lists, late offers, etc. but I'm not expecting too many more schools to release anything until February.
It freaks me out too, though as Startz pointed out somewhere a few weeks ago we don't know whether more people are applying or if a normal amount of people are applying to more schools. Freaked out applicants in a really weird year apply to 16 schools instead of 12 just to be safe.