It was posted in the official website of the My Hero Academia anime that its fourth season will premiere in October 2019. It first visual was also released with the tagline that says “I’ll become your hero!”
While we wait for season four, BS NTV will be airing the first three seasons in Japan starting on January 13. One episode will be aired every Sunday from January to March, while two episode will be aired every Sunday from April to September.
The last episode of the anime’s third season aired on September 29. My Hero Academia is based from the manga series of the same name created by Kohei Horikoshi. It was first published in the Weekly Shonen Jump in 2014 with 16 compiled volumes released so far.
Sources: Comic Natalie