P.A. Works announced that they are producing the SHIROBAKO Movie in 2018 at the "Musashi-Sakai x Shirobako Harumatsuri" (Musashi-Sakai x Shirobako Spring Festival) event. In summer 2019, they announced that the movie will be aired in spring 2020.. In 2019 autumn, P.A. Works announced that the movie will be aired on February 29, 2020.
Kaede Miyai will be introduced in the movie.
The story starts four years after finishing Third Aerial Girls Squad. Masato Marukawa, the boss of the Musashino Animation, announced that they will stop producing Time Hippopotamus (タイムヒポポタマス) because they will start producing a new original anime named Air amphibious assault ship SIVA (空中強襲揚陸艦 SIVA)..
- Mizushima states that the movie was finished three days before release.
- ↑ ANN
- ↑ 劇場版『SHIROBAKO』NEWS
- ↑ 劇場版「SHIROBAKO」2020年2月29日（土）全国劇場公開決定！
- ↑ ANN: Shirobako Anime Film's New Trailer Announces February 29 Premiere
- ↑ 劇場版『SHIROBAKO』本予告でfhánaの主題歌「星をあつめて」初解禁！ お馴染みのキャラが、新キャラが、大奮闘
- The offical website(Japanese)