In their most recent newsletter, Atlus USA has confirmed that Persona 2 Innocent Sin for the PSP will be released in North America. The game’s website lists a Fall 2011 release.
This PSP port of the game is similar to the one the first Persona received in 2009. It features updated audio and visuals, new animated scenes, and a whole new soundtrack (though this time around you can switch back to the original). This marks the first time the game will be released here, as previously it never made its way over due to some of the content.