The "Musashi-Sakai x Shirobako Harumatsuri" (Musashi-Sakai x Shirobako Spring Festival) event in Tokyo for the Shirobako anime revealed on Saturday that the franchise will get an anime film project. P.A. Works is starting production on the film, but the film does not have a set release date yet. The staff at the event confirmed that the film will be an all-new work.

The confirmed returning staff includes director Tsutomu Mizushima, animation studio P.A. Works, scriptwriter Michiko Yokote, character designer Ponkan8, animation character designer Kanami Sekiguchi, and production company Infinite. The staff at the event said that the "story will continue" in the film.

Producer Takayuki Nagatani stated at the Tokyo Anime Award Festival in March 2016, "if we could decide on a theme, there might be a chance [for a sequel]" to Shirobako.

Shirobako focuses primarily on Aoi Miyamori, a production assistant at a fictional anime studio called Musashino Animations. The story follows the daily office life and problems that arise in an animation studio, and the workflow in making an anime. Parallel to that, the show also focuses on Miyamori's friends, who all work or are aiming to work in the anime industry: a key animator, a CG animator, an aspiring voice actress, and a scriptwriter.

The 24-episode anime premiered in October 2014, and Crunchyroll streamed the anime as it aired in Japan. Sentai Filmworks licensed the series, and released it on home video in North America in 2016.

Update: Added list of returning staff from event.