* Digimon Survive: While not strictly a 3D action game, Digimon Survive (released in 2022) features 3D character models and environments in its visual novel segments. This suggests Bandai Namco is comfortable using 3D for the franchise.
* Digimon ReArise: This mobile game released in 2019 does utilize 3D models and environments in its gameplay. However, it's a mobile game, so the fidelity might not be as high as a console release.
* Past Rumors: There have been rumors of a "Digimon World" game in development for a while, but nothing has been confirmed. There's been speculation it could be a 3D title, but this is just speculation.
* The "Digimon World" Series: The "Digimon World" games are typically RPGs with 3D environments and character models. They haven't seen a mainline release in years, though a remake of the original "Digimon World" was released in 2020.
In Conclusion:
It's possible that Bandai Namco is exploring a 3D Digimon game, but there is no concrete evidence yet.
Keep an eye out for official announcements from Bandai Namco and the Digimon franchise!