When I got accepted, they e-mailed me the acceptance letter within a week notifying me. The interview was about 45 mintues with 3 faculty. My advice is to be very familiarized with their school, philosophy, and certain unique features of the program. I started the interview with the faculty asking me if I had questions about the program, lucky I had done my homework so I was not thrown off. So it's good to have questions ready for them.