Sorry -- I don't know how to use this board as efficiently as I should. Is there a central location (a board?) where people announce that they've received acceptances?
I'm told that a lot of schools do rolling admissions. A DGS will extend a few offers in a week (or over a couple of days) and then update his/her information. So don't feel bad yet.
What field are you in ?
Congrats. But if you know you're going to Stanford, please turn down your other offers. Schools often can't make additional offers until they receive turn downs.
So how important are these departures for you? Does it advantage other schools to which you've been admitted? Are those schools stable in their faculty members?