Sorry to have not responded sooner.
I know that the theory is that they meet in Dec, Feb, and March, I believe. I am not certain about that, but I think that's what I remember.
I got my phone call from Dr. Covington on January 5. This makes me think that things are not running according to the norm around there. I mean, maybe there was a meeting in Dec. and they just waited until January to notify me. I also know that other people were accepted soon after I was. Or maybe they are just doing acceptances sporadically, which is more what it seems like.
In the Facebook group, there are about 2-3 people being added every few weeks. The good news is that there are only 35 members in the group, and several of those are current UT dental students. So there are probably roughly 30 or so of from class of 2015 in the group. I say that because, if we assume that the majority of people accepted have Facebook and have joined the group, then they have only filled a third of the class. And still, if there are even 10 people who have been accepted who have not joined, that's still not even half the class full. I believe they wanted to fill 90 seats this year.
Anyway, I know it's easier said than done, but don't stress about it and just pray for the best. Dr. Covington called my house, left a voicemail on my home phone, and I didn't even know it was there until about 4 hours later. It was crazy and caught me so off guard. If you have prepared well for UT, I am sure you will be rewarded. Patience!!