I had a similar experience. I submitted my application Nov 1 and heard back 24-48 hours later to schedule and interview. From what I've heard, I think they are just checking for completeness before scheduling the interview, not necessarily picking certain candidates.
I had my interview on Monday Nov 26th over Skype. The interview was kind, casual, but did ask about specific application weakness ( Ie: asked me about the one C on my transcript and why it was there).
She let me know that I would hear back within two weeks. I haven't heard yet and we're about ten days out, so I guess I will see!