Allison Rymer, lead writer for Forspoken , is also involved in the development of the as-yet-unannounced AAA game, which is currently slated for a 2023 release.
On his LinkedIn profile, Rymer talks about the differences between working on Forspoken (building the world, developing the story, and writing the script for an AAA game) and the mysterious "AAA game" that will be released in 2023. However, all that is known at the moment is only the release window of an unknown project. It looks like Allison joined the development of this title back in November 2020, and the work is still ongoing. Unfortunately, this is where the information ends.
However, based on Rymer's profile, it seems that the mystery game, whatever it is, has Montreal to do with it. Of course, many famous studios are based in this city, including EA, Bethesda, Ubisoft, Warner Bros, Quantic Dream (Detroit: Become Human), People Can Fly (Outriders), Phoenix Labs (Dauntless) and Luminous Productions, part of Square Enix with her current project Forspoken. So there are plenty of options.
Key point - if you like Allison's work on Forspoken ( check out the latest trailer ), which will be out in 2022, you can look forward to a new product from this author as early as next year, 2023.