A spin-off or prequel entitled Bumblebee, starring Hailee Steinfeld and John Cena, is set for release on December 21, 2018, and will be set in 1987, twenty years before the events of the original Transformers live-action film. The movie's working title was Brighton Falls; it wrapped up shooting on November 10, 2017.

Can we conclude that is transformers the last knight the last one?
no