Atlus has revealed that Persona Q2 will be coming to the Nintendo 3DS. To go with it, a teaser website has been set up and can be found here.
There is not a lot of information about the game at the moment but the teaser site does confirm that characters from Persona 5 will be featured in Persona Q2. With any luck, the site will be updated over the coming months and we can find out more about the game.
Source: Persona Q2 website