An Amazon listing for a Sword Art Online: Hollow Realization Digital Deluxe Edition reveals the game will have a Season Pass.
The Digital Deluxe Edition costs $84.99. Given that these bundles are generally meant to cost less than purchasing the main game and Season Pass separately, the Season Pass will likely cost $29.99 on its own.
Bandai Namco has yet to officially announce the Season Pass, but it will host a “Sword Art Online Special Stage” at Tokyo Game Show 2016 later today where the announcement may take place. You’ll be able to watch it live on YouTube from 8:20 p.m. PT / 11:20 p.m. ET / 12:20 JST.
Sword Art Online: Hollow Realization is due out for PlayStation 4 and PS Vita on October 27 in Japan, and November 8 in North America and Europe. In North America, the PS Vita release will be digital-only.
Thanks, @Wario64.