Looking here specifically at main-series games, i.e. a Gen IX game as listed by Serebii and Bulbapedia, not part of a spin-off series like Mystery Dungeon or Detective Pikachu, available on Switch or Switch successor, compatible with Pokémon Home at some point.
For reference as to what a main-series game would be, in Gen VIII the entries would be Sword, Shield, Brilliant Diamond, Shining Pearl, and Legends: Arceus.
If two are announced simultaneously then I'll resolve equally between the two.
@May Question body:
Looking here specifically at main-series games, i.e. a Gen IX game as listed by Serebii and Bulbapedia, not part of a spin-off series like Mystery Dungeon or Detective Pikachu, available on Switch or Switch successor, compatible with Pokémon Home at some point.