Some sources comment that the ending of the Sword Art Online: Progressive reveals a sequel for 2022, divided into 2 parts with the name "Yuuyami no Sukerutsu" which corresponds to the fifth floor of Aincrad.
Therefore, treat this information as a rumor until the official announcement.
The current film Sword Art Online: Progressive – Hoshi Naki Yoru no Aria is directed by Ayako Kawano at A-1 Pictures . Kento Toya ( Sword Art Online: Alicization – War of Underworld , The Seven Deadly Sins: Revival of The Commandments ) is responsible for the character designs.
The film is based on the light novel Progressive by author Reki Kawahara . The novel was released in 2012 as a revised version retelling events that took place in Sword Art Online.
Finally, the story describes Kirito's journey through the floating castle of Aincrad from the beginning, floor by floor.