Super Mario Odyssey's visual presentation has changed a lot, and my goodness is it gorgeous. pic.twitter.com/e8SQKvn7uR— Nitro (@NitroHazardX) September 13, 2017
As you can see by the visual comparison here, it's clear Nintendo has been tweaking the graphics in Super Mario Odyssey. Nintendo tends to do this late in the game with their releases. We notice visual upgrades soon before a game launches, and Odyssey is no different.