I think it may be too early to announce a new mainline game considering Scarlet/Violet barely had its final DLC release 2 months ago lol, and supposedly, Nintendo is taking the technical mess the games were seriously. I would guess, a Pokémon GB title added to NSO, a remake of some sort, and maybe Arceus 2.
Along with updates on mobile games and that Pokémon Unite game.
You called down the thunder, now reap the whirlwind