https://sao-alicization.net/bddvd/08.html
Sword Art Online: Alicization - War of Underworld Anime Listed With 23 Episodes
The official website for the Sword Art Online: Alicization - War of Underworld anime is listing that the anime will have eight home video releases with 23 total episodes. The first four home video releases will ship once a month from December through March 2020, and the latter four home video releases will ship once a month from June through September 2020.