Because the new DC Studios is starting fresh with its releases, no DC projects up until now have been in canon with the new DC Universe. That means even the films and shows made by James Gunn, one of the two new heads of DC Studios, aren't in the same continuity as the releases coming up such as Superman and Creature Commandos. It also means the first season of Peacemaker isn't canon while the second season will be, according to Gunn.