I could be wrong... but I THINK this game is in 3D.
What I mean is, those stages look like they're on a 3D track that can tilt at angles during cutscenes, similar to the way the sprites in Final Fantasy Tactics (PSX) rescale when you zoom in/out and pan/rotate.
This could be one of those games that get 3D-style cutscenes, even if the game backgrounds/sprites are in 2D.
I would probably wait until there's a gameplay video, rather than trusting these screenshots.