My husband applied to Stanford for EE PhD and received an e-mail last night that he was accepted into the M.S. program-- to us, that is a reject.
In the past (according to old gradcafe results) March is when the rejections come. For all the big schools: MIT, Stanford, Princeton, etc. February is the month of acceptance. If February is a quiet month- no interviews, no e-mails- then it is (most likely) bad news.
There have been oddities though, sure. Good luck! It isn't over until it is over, as they say around here at gradcafe.