When does Sym-Bionic Titan return?

Sym-Bionic Titan is an American animated television series. The series focuses on a trio consisting of the alien princess Ilana, the strict but rebellious alien soldier Lance, and the robot Octus. A preview of the series was first shown at the 2009 San Diego Comic-Con, and further details were revealed at Cartoon Network's 2010 upfront. It premiered on September 17, 2010, and ended on April 9, 2011, with a total of 20 episodes as ordered by the channel.
The series follows the lives of Lance, Ilana and Octus, two alien teenagers and a robot respectively in the form of humanoids living on Earth, an "identical" planet to Galaluna. The Galalunans are outfitted with individual armor that provides more than ample protection when called into battle.