When does Durarara!! return?

The Durarara!! light novels are written by Ryohgo Narita and illustrated by Suzuhito Yasuda. The first novel was released in April 2004 under ASCII Media Works under their Dengeki Bunko imprint. A manga adaptation of the same name has been serialized in Square Enix's sh?nen manga magazine Monthly GFantasy since July 2009. A 24-episode anime television series adaptation was broadcast from January to June 2010. The story is told from the perspective of approximately eleven of the main characters.