It’s also an already, almost-completed Japanese movie of its own called “Yume Kōjō: Doki Doki Panic”.
They will be spending the next two years modifying the character likenesses of Mario, Luigi, Princess Toadstool, and Toad, building them over their respective counterpart models of Imajin, Mama, Lina, and Papa.
Yume Kōjō: Doki Doki Panic takes place within a book with an Arabian setting, so I am willing to bet Super Mario’s Bros 2 is going to feel distinctly different from the first Super Mario Bros Movie.
One last interesting fact, the first Super Mario Bros Movie was shot in a 2.39:1 aspect ratio. Alternatively, “Yume Kōjō: Doki Doki Panic” movie was shot in a 1:2.39 aspect ratio, making it more of a “vertical” aspect ratio, complimenting the movie’s focus on the main characters lifting, carrying, throwing, stacking, and climbing objects; and incrementally scrolling the screen upward when reaching the top.
I bet it won’t even feel like a Mario Movie at first, but in the long run people will remember it fondly.