I'm a big fan of Attack on Titan. One, it's one of the rotating banners on Sketchy Details right now (that would be the young man standing in front of the fiery landscape). Two, I've already seen it subbed to completion multiple times. Three, I'm keeping up best as I can with the manga as released in America. Four, I'll also stay up on the weekend to watch the dub on Adult Swim even though I can just watch it on Hulu or Crunchyroll instead and already know what's going to happen. For those unfamiliar, Attack on Titan is a post-apocalyptic anime. Unlike most post-apocalyptic anime, this is horror/fantasy and period at the same time. Civilization crumbled at the hand of colossal beasts called titans. Everyone who survived lives within three sets of walls. One day, young Eren Yeager watches as the titans once again crash through the walls and attack the humans. He vows to grow up and join the Survey Corps so he can fight the beasts directly.
It's a dark and beautiful series. The quality of animation is incredible. Perhaps the most intriguing part of the series is its reliance on that chosen one/Shonen trope (the male lead isn't the strongest, the smartest, or the most skilled, but he is the most passionate and his friends do the rest) to tell a very different kind of story. Eren's inexplicable powers bring him into the contact with a strange and wonderful ensemble cast of fighters all trying in their own twisted little ways to solve the titan crisis.
Now, coming as a surprise to no one, season two of Attack on Titan is already in production. We have no release date yet. What we do know is that the series will be recut into two feature films (Madoka Magica-style) that will release before the second season.
There are also two OVA episodes airing based on the prequel manga (yes, there's now a prequel manga) Attack on Titan: No Regrets. They will air sometime between now and whenever season 2 is released. One would assume they would air leading into the release of one of the films to garner more interest in the prepackaged story. No guarantee of that, though. The Attack on Titan brand is huge and probably doesn't need the extra marketing push at this point to be profitable.
No matter. We're getting more animated Attack on Titan and that's great news. I'll wait as long as necessary if the quality of animation and storytelling is as strong for the second series.