There have been many different incarnations of Scooby-Doo, and Scoob! was another release that served as a fresh new reboot of the story.
Scoob! also serves as an origin story of sorts by showing how this version of Mystery, Inc. came to be.
The whole creative team that made the first movie is still around and back and working on something new.
The Scoob! voice cast includes Frank Welker as Scooby-Doo, Will Forte as Shaggy, Gina Rodriguez as Velma, Amanda Seyfried as Daphne, and Zac Efron as Fred Jones.