When does A Pup Named Scooby-Doo return?

A Pup Named Scooby-Doo is an American animated mystery comedy television series. It is the eighth incarnation of the Hanna-Barbera franchise. It depicts younger versions of the title character and his companions as they solve mysteries. The series was developed by Tom Ruegger and premiered on September 10, 1988, airing for four seasons on ABC.