Warner Bros. and Lego Group announced the development of The Lego Batman Movie as a spin-off from The Lego Movie.
The first official trailer for The Lego Batman Movie was released, giving audiences a glimpse of the film's animation style and humor.
The Lego Batman Movie had its world premiere, marking the official debut of the film to audiences and critics.
The Lego Batman Movie was released widely in theaters across the United States and internationally.