> the company revealed that it had begun full-scale development of the new engine in 2019, with a re-boot happening in 2020. Assembling a team of over 50 engineers headed by former Ubisoft and Square Enix technical director Julien Mercenon as CTO, Bandai Namco Studios set out to build an engine capable of large-scale development, including open-world games.

Julien Merceron was behind MGSV's Fox engine. We're so back bros.

https://automaton-media.com/en/news/bandai-namco-is-still-working-on-new-in-house-game-engine-update-reveals/