SuccessHK have info on a new commercial game release for the PSP:



Shin Megami Tensei: Devil Summoner is a port of the 1995 Sega Saturn original. In Devil Summoner, you play as a slick, suited man named Kyouji, who, having been killed by an assassin named Cid, manages to continue life as a Devil Summoner. Kyouji and his partner, Rei Reiho ends up serving as private detectives who get involved in a number of mysterious cases. The game is known for its character designs and gameplay that requires that you summon demons to serve as party members.

More info and to buy at SuccessHK