I'm sure at some point down the road, Atlus will release Persona 6. It's pretty much a given after the success of Persona 5. The question is, what platform will the game end up on? Atlus is wondering that themselves.
Atlus sent out a survey to fans in Japan, and one of the questions on that survey pertains to Persona 6. While they don't confirm that the game is in the works, they do want to know where fans would like to see it. The list of potential platforms includes Switch, PlayStation 4, PC, PlayStation VR, mobile, and “other”. The 3DS has been dropped from this year's survey, which isn't surprising. Nice to see the Switch added in, though! Hopefully fans are making sure to pick Switch when they fill out the survey, and we could see this become a reality in the future!