Thomas & Friends: All Engines Go! is an upcoming American-Canadian children's animated television series that serves as a reboot of the original Thomas & Friends series that ran from 1984 to 2021. The series was originally set to be the show's twenty-fifth season, before Mattel Television confirmed that it was a new show altogether. It is said to introduce "an entirely new approach to Thomas & Friends content," with a new animation style and story structure. All Engines Go! is set to premiere in October 2021.