Game Freak is treating Pokemon Ultra Sun and Moon as the “culmination” of the series on Nintendo 3DS. Pokemon Ultra Sun and Moon will be the last core title in the series for the 3DS due to the game having pushed the limits of the handheld console.
There is a new Pokemon RPG in the works for Switch, which was teased at E3 2017 earlier this year. Nintendo didn’t elaborate on the title, only that it was in development. There are no comments on whether the series will move onto the Nintendo Switch going forward or whether it’s an RPG mirroring that of the previous Pokemon RPGs.
Nintendo said to expect the Pokemon RPG for Switch to arrive “in 2018 or later.”