When does IGPX: Immortal Grand Prix return?

The IGPX TV series made its hour-long premiere on November 5, 2005, at 10/9c. It was the first ever Toonami original anime series. The series is set in 2049 and revolves around the Immortal Grand Prix, a mecha racing/battle circuit. The full-length anime series was handled by director and writer Mitsuru Hongo and was animated by Production I.G.