News Siren Visual Acquiries No.6
Siren Visual's website has been updated to include No. 6 as a pre-order release. No. 6 is slated for release on the 6th of December and it's 300 minute running time implies that the full series will be kept on the two discs.
No. 6 is based on the novel series written by Atsuko Asano and is set in the sixth city state (The No. 6 of the title) left remaining after the great war. The series follows Shion, a boy born and raised in the comfortable elite castes of No. 6. On his 12th birthday, Shion gives shelter to a boy called Nezumi who is on the run from the authorities. For helping a fugitive Shion and his mother are stripped of their status and forced to move to the ghettos of No. 6. Four years later Shion and Nezumi meet again and start to unravel the secrets of the city.
The series was originally screened as part of the Fuji TV Noitamina block in July 2011. The series is produced by BONES and directed by Kenji Nagasaki with toi8's original character designs adapted by Satoshi Ishino (Excel Saga, Nogizaka Haruka no Himitsu) and art direction by Ayu Kawamoto (Highschool of the Dead, Waiting in the Summer).
Source: Thanks to Shiroi Hane!