The site for Bessatsu Shonen Magazine (home of Flowers of Evil, Joshiraku and the manga versions of Ixion Saga DT and From the New World) posted, then removed the announcement that an anime adaptation of Hajime Isayama's Kodansha Manga Award-winning, Osamu Tezuka Cultural Prize-nominated Attack on Titan is slated for spring 2013.
The series is an intricately detailed and disturbing manga concerning how a human society reacts to the sudden onslaught of voracious giants. Kodansha began releasing it in North America this year.
Tetsuya Nakashima, who directed the nearly-Oscar-nominated adaptation of Confessions and the cult favorite adaptation of Kamikaze Girls, has a live action adaptation of Attack on Titan slated for fall 2013.
There's plenty of speculation that this anime will turn out to be the teased Project "Attack," which sees Death Note and Highschool of the Dead director Tetsuro Araki helming an anime series at Production I.G child studio Wit, with Shakugan no Shana's Yasuko Kobayashi writing and character design from Psycho-Pass' Kyoji Asano.