When does What's New, Scooby-Doo? return?

The series premiered on September 14, 2002, and ran for three seasons before ending on July 21, 2006. The title song was performed by Canadian band Simple Plan. The series marked the return of Velma and Fred as main characters in the regular Scooby-Doo franchise since 1984. This was the final series where Casey Kasem voices Shaggy before the actor's death in 2014.