We learned last November from Anime Limited who announced at Cloud Matsuri that they’ll be releasing the film in 2021 in the UK.
The distributor is doing a one-day event on July 1st, 2021 in the UK and Ireland for it.
Taichi Ishidate directed the TV series and film with Akiko Takase serving as the character designer and chief animation director.
That obviously took awhile as getting theaters open and audiences willing to go out to be a thing but now Anime Limited has made their first-round plans for the project.