At least that’s what we should expect according to this teaser from the Dengeki Bunko Fall Festival 2017. The event description for Sword Art Online focuses on the recent anime movie -Ordinal Scale-, but near the end it mentions that they will announce more info about the SAO project, including a game.
The festival will take place on 1 October 2017, and will feature events for many anime like Angel’s 3Piece!, Kino’s Journey The Beautiful World – The Animated Series, and Hakata Tonkotsu Ramens.
Dengeki Bunko Fall Festival 2017
Official Site: http://db2017fes.dengeki.com/stage/