Thanks to Yaraon/2ch, we have more details.
Chuunibyou will be a TV series. The supervisor will be Tatsuya Ishihara, the supervisor of the Key works and the
Haruhi series. Series composition will be done by Jukki Hanada, who composed the
Nichijou and
Steins;Gate anime adaptations last spring. Chief Animation Director/Character Designs: Kazumi Ikeda, the Chief character designer/animation director for the Key works and animation director for shows like
Haruhi. Background art, as always, is supervised by Mutsuo Shinohara.
My guess: we'll see this on the air in Fall 2012.