The project is a film due out in 2021 that will be called Sword Art Online the Movie -Progressive- Aria of a Starless Night.
Sword Art Online: Progressive is a new version of the Sword Art Online tale that starts at the beginning of Kirito and Asuna’s epic adventure–on the very first level of the deadly world of Aincrad!
With the end of the Sword Art Online: Alicization – War of Underworld last year, it concluded by making sure we know there’s more coming. And that’s in the form of the Sword Art Online: Progressive, which is basically a retelling in a cleaned-up fashion of the original story.
The film has Ayako Kawano directing it with Kento Toya handling the character designs for it.