When does Adventure Time: Elements return?

"Elements" is an eight-episode-long miniseries that aired as part of the American animated television series Adventure Time's ninth season on Cartoon Network. It follows the adventures of Finn (voiced by Jeremy Shada), a human boy, and his best friend and adoptive brother Jake, a dog with magical powers to change shape, and grow and shrink at will. Elements is the third and final Adventure Time miniserie produced, following Stakes (2015) and Islands (2017)