This was announced a little while back now but I guess i'll pop it here anyway, in case some haven't seen it yet.
The newest game in the Sword Art Online Series has been announced for PS4, Xbox One and PC. It has no official release date just yet.
I would expect to see it alongside the second cour of the Sword Art Online Alicization anime so anywhere from October 2019 to April 2020 (although most likely the latter).
[ali