The third season promos have been showing up on FX, advertising September 7 as the day of reckoning.
Now if you haven't heard of the show, but want to get into it, it'll be hard to follow. I would suggest at least watching the second season to get on track. I started watching it at the beginning of last season, and I didn't go back the watch the first season (I really should), but it was really easy to pick up on.
Anyways, there's so much that the second season finale left off on:
Like, where the hell is Glenna and the sheriff going?
Where the hell is Cameron going, and what's he going to do with a baby?
Otherwise this is one of the only shows that I've ever actually stuck to, and its amazing altogether.
I think that's just a small arc in the next season, but it'll be a change of pace.