SEGA Atlus leaker Midori is back with some new information on the long-awaited next instalment in the Persona franchise titled Persona 6. Midori says that the game’s development began back in 2019 at the same time as Persona 3 Reload and Persona 5 Tactica. Atlus has yet to confirm the project or reveal any details so it is not clear how far along in development the game currently is.
Midori says Persona 6 development began in 2019

I thought to myself ‘huh. So it’s been in development for 5 years, then.’
Then I thought to myself, ‘oh god, 2019 was 5 years ago’, and felt old…
No, it has been 100 years since 2019.