MC

"are in development for both the current Switch and its successor."

PFFTTT

Yeah right, remember "Ports of Sun and Moon for the Switch" when it was announced? Please, GameFreak would never develop a new Pokemon game for a brand new console.

What's more likely would be that its being developed for the Switch, but its successor will play Switch games, and it would be hampered by being developed for Switch Architecture (that and GameFreak is just bad at developing games in general, so it will be a laggy mess with several Pokemon cut to compensate and have it barely run) while Gen 11 or something will be made for the Switch's successor entirely.