For any that had doubts (probably no one here) next year’s Pokémon games are indeed Generation 8 and will have many new Pokémon and will be aimed at experienced players unlike this year’s Let’s Go games. They’ll also have the best graphics of any Pokémon game so far.
Serebii.net - Where Legends Come To Life
I’m starting to think Nintendo will be treating this game differently than previous releases. I wouldn’t be surprised if we saw a short teaser giving an idea of what it will look like before 2019.