Just read from dualshockers on Nintendo applying 5 new patents for the Poké Ball controller:
The newly released Pokémon Sword and Shield doesn’t allow users to use the Poké Ball Plus as a controller, and while speculation has started about a new Let’s Go title being on the way, Game Freak has already said they have no current plans to make new Let’s Go titles. However, they might “if the demand is there.”“The patents aim to properly arrange components in a spherical controller, to enable various operations using a game controller, to properly arrange components in a spherical controller, to improve the degree of freedom for a structure for light emission in a game controller, and to provide a game controller in which components are properly arranged in a substantially spherical game controller.”





