My classmate interviewed at Pitt on 11/25, and she got a call on Dec 2.
My bet is that they are waiting for your new DAT scores, if u indicated so on your application, and if you are currently taking classes, you should also turn in your Fall grades ASAP. Don't wait for aadsas, as they are slow.
I don't want to sound rude, but my feeling is that if you don't turn in these above item soon enough, you will get rejection in mid Feb.
Pitt will start interview again tomorrow, and they will send out more acceptances in mid Feb to fill up their class (their class is small). And that's also the time they finish up this year application cycle, they always try to finish before march. So, if you're not on the waiting list, you will most likely getting the aweful letter after Feb 15.
Good luck to you.