My guess is that there will be about 11 worlds in total and these are the worlds I predict will appear based on financials, popularity, and legality.
Shibuya
Arendelle
Toy Box
Zootopia(it's too massive a level for a side game)
The Great Barrier Reef(Finding Nemo)
Motunui(Moana)
Marvel World?-Square does have a working relationship with Marvel(the biggest movie franchise in the world) so...
Metroville(Incredibles)
A Galaxy Far, Far Away(Star Wars)-Nomura is a big fan, it's the biggest property historically in movies, and the themes do fit Kingdom Hearts fairly well. Legality with EA aside, it's really just a matter of time before this happens.
Daybreak Town
Final World
Other strong Possibilities: Land of the Dead(Coco), Inside Out, Soul, Wall-E, Ratatouille, Jungle Book(finally), Jungle Cruise if it is a hit, Avatar(blue cats), Simpsons(maybe), a Final Fantasy 15 world.
Shibuya
Arendelle
Toy Box
Zootopia(it's too massive a level for a side game)
The Great Barrier Reef(Finding Nemo)
Motunui(Moana)
Marvel World?-Square does have a working relationship with Marvel(the biggest movie franchise in the world) so...
Metroville(Incredibles)
A Galaxy Far, Far Away(Star Wars)-Nomura is a big fan, it's the biggest property historically in movies, and the themes do fit Kingdom Hearts fairly well. Legality with EA aside, it's really just a matter of time before this happens.
Daybreak Town
Final World
Other strong Possibilities: Land of the Dead(Coco), Inside Out, Soul, Wall-E, Ratatouille, Jungle Book(finally), Jungle Cruise if it is a hit, Avatar(blue cats), Simpsons(maybe), a Final Fantasy 15 world.