When does Summer Camp Island return?

Summer Camp Island is an animated television series created by Julia Pott for Cartoon Network. The series depicts the episodic adventures of Oscar and Hedgehog, both of whom are staying at the magical eponymous summer camp. The show premiered with a 48-hour marathon consisting of the first 20 episodes running over an entire weekend, on Cartoon Network and Boomerang. Four additional seasons premiered exclusively on HBO Max, at approximate six-month intervals from June 2020 to December 2021.