Square Enix has confirmed in Japan that Final Fantasy III will see release on the PlayStation Portable on September 20th for both UMD and digital release.
The version of Final Fantasy III that was released exclusively on the Nintendo DS will be the version ported to the PSP. The game was later ported to iOS with an auto battle feature that will appear in the PSP port. This version will also have a 16:9 screen ratio and a gallery that will allow players to view artwork and listen to music from the game.
Fans of Final Fantasy and the job class system will definitely keep an eye out for a possible release in the west.