When does United States of Tara return?

United States of Tara aired on Showtime from January 18, 2009 to June 20, 2011. The series follows the life of Tara Gregson, a suburban artist and mother coping with dissociative identity disorder. Toni Collette won the 2009 Primetime Emmy Award and 2010 Golden Globe Award for Best Actress in a Comedy Series for her role. The show was conceived by executive producer Steven Spielberg and his wife Kate Capshaw.