Uno Tsunehiro, a critic of subculture, disclosed in an online discussion session that anime director Yamamoto Yutaka is working on a new anime to be aired in 2011 or 2012. The original story will be written by Azuma Hiroki (English Wikipedia) and Okada Mari. Azuma Hiroki is a critic of otaku culture and the professor of Waseda University Faculty of Letters, Arts and Sciences. Azuma is well known for having defining the term Sekai-kei in “Critical Point of Bishojo Game” (2004).
Source: Video of the discussion on UStream (12:15)