Shin Megami Tensei: Persona 3 and Shin Megami Tensei: Persona 4 are, and so far the only games from the Persona series, we westerners have had the priviledge of experiencing. However, developer Atlus are in the process of porting the first games in the series onto the PSP and provide a few stills from the titles.
The ports are expected to get their release in the autumn, when we'll be able to enjoy the Persona universe in mobile form.