Just emailed w/ the MIT graduate program assistant, and she told me that it's unlikely to be admitted if you haven't received an interview invitation by now, and that all rejected candidates will receive notifications in April.
Also got unofficially rejected from UPenn when I tried to update my application I emailed them, and they said they received almost 400 applications this year.
Feeling pretty sad because I still haven't received an interview from any of the schools I applied to