Boku no Hero Academia the Movie: Futari no Hero
僕のヒーローアカデミア THE MOVIE ～2人の英雄(ヒーロー)～
The 2018 combined second and third issue of Shueisha's Weekly Shonen Jump magazine revealed that Kouhei Horikoshi's My Hero Academia manga is inspiring an anime film that will premiere in summer 2018. The film will feature an original story.
Horikoshi's comment in the issue also stated that the movie will show the previously unrevealed past of a certain character, and will also feature the characters of Class A. Horikoshi also drew an illustration to commemorate the announcement.
(Source: Anime News Network)