Whether or not Super Mario Odyssey 2 ends up being real or not is something that we'll have to wait to see, but maybe we'll get a new announcement tied to the series later in 2023 if we're lucky.

Source: https://comicbook.com/gaming/news/super-mario-odyssey-2-nintendo-switch-lite-oled-theory/

While the likes of Super Mario Odyssey include twists in gameplay to keep the long-running series fresh, the core concept has never really changed.

Source: https://screenrant.com/legend-of-zelda-movie-super-mario-bros-harder-reason/