It will never return. The series ended after one season in 2013.
Green Lantern The Animated Series - 2011 is rated/received certificates of: Singapore:PG USA:TV-PG
Green Lantern The Animated Series - 2011 Steam Lantern 1-16 was released on: USA: 30 November 2012
Green Lantern The Animated Series - 2011 Babel 1-21 was released on: USA: 9 February 2013
Green Lantern The Animated Series - 2011 Loss 1-19 was released on: USA: 26 January 2013
Green Lantern The Animated Series - 2011 Homecoming 1-13 was released on: USA: 26 May 2012
Green Lantern The Animated Series - 2011 Ranx 1-25 was released on: USA: 9 March 2013
Green Lantern The Animated Series - 2011 Reckoning 1-7 was released on: USA: 14 April 2012
Green Lantern The Animated Series - 2011 Invasion 1-12 was released on: USA: 19 May 2012
Green Lantern The Animated Series - 2011 Scarred 1-24 was released on: USA: 2 March 2013
Green Lantern The Animated Series - 2011 Reboot 1-15 was released on: USA: 6 October 2012
The only current tv show based entirerly on the Green Lantern is Green Lantern The Animated Series and it is on every saterday morning on Cartoon Network.
No, it ended after one season.