Holy shit, trailer looks badass anyway. How could it get bett-
Anime News Network wrote...
[. . .] director Tetsuro Araki (Death Note, Highschool of the Dead, Guilty Crown), head writer Yasuko Kobayashi (Shakugan no Shana, Claymore, JoJo's Bizarre Adventure), character designer Kyoji Asano (Psycho-Pass, Tokyo Marble Chocolate), and Wit Studio.
Main site wrote...
Score: Hiroyuki Sawano (Ao no Exorcist, Guilty Crown, Gundam Unicorn)
...
... anime of the fucking year, people. I am calling it.
P.S. Jonoe, you might want to edit the staff info in as well, just to grab other people's attentions.
EDIT: Here's the full staff and cast list so far.
http://myanimelist.net/anime/16498/Shingeki_no_Kyojin/characters