Only hours before the finale aired on March 26th, it was confirmed with the announcement that a movie by the title of ‘Jujutsu Kaisen 0’ (also referred to as JJK0) will be produced by MAPPA. Alongside the release of a teaser trailer, it was announced that Jujutsu Kaisen 0 would debut in Winter 2021.
Following an event in Japan, the production team then confirmed that the film would premiere in cinemas on Christmas Eve.
More information here:
Jujutsu Kaisen 0: Everything we know so far about the anime movie! (hitc.com)