Next week, Atlus will be holding a Persona concert in Japan- this is a big deal because traditionally, these concerts have been where Atlus have made multiple major Persona announcements, including the very first trailer for Persona 5 ever. We are expecting some Persona announcements to come next week… and one of those may have leaked already.
As Twitter user Mystic noted, pq2.jp, the domain that Atlus would use for a hypothetical Persona Q2, has been registered by Atlus, indicating that the game may indeed be happening- and if it is happening, there is a chance that it will be announced at the concert next week, too.
If Persona Q2 is real, it is likely to be a quick reuse of the original game’s assets and engine, meaning it will probably be for the Nintendo 3DS (so don’t go expecting a Switch version), and made in the same style as the original game. All of which is to say- don’t expect this on the Switch. If the Switch is to get a Persona game, which, hey, who knows, it may be announced next week, it’ll be something else entirely.