For those who haven't received their results, it might be possible that they did not put you into the early notification pool...I had thought I was being considered in the early round, but I checked with the admission staff in early December and they said they didn't receive my transcript. It later turned out that the transcript had somehow been mailed to their office yet they did not put it into my file. I very much hoped to receive admission result earlier so I argued my case with them. I think SAIS is not doing a very good job in helping the applicants to check with what they are missing, and neither do they have a tracking system online.
P.S. Although they finally agreed to put me into the early pool, I am deferred to regular decision. Anyone the same?