I am not an international student, but I was also notified about my admission decision last Thursday. I just checked the website again and it says in the FAQ that they were planning to get decisions out by mid-March.
I also got a scholarship, so based on that and the posts I'm seeing in this thread, it's possible that they're only notifying award recipients now and will be releasing the rest of the decisions at some later date. I have very little to base that on, however, so I could be totally wrong - in which case, don't mind me.