While Final Fantasy Tactics on the PsOne had a translation that was clumsy at times, the enhanced PSP port was re-localized with Victorian style English and had new colored pencil cutscenes. Unfortunately, this version was marred by loading times during battles. Running the game from a Memory Stick instead of a UMD should fix those.
While a North American release has not been announced, Square Enix plans on re-releasing the 20th anniversary remakes of Final Fantasy and Final Fantasy II internationally. Perhaps, a domestic announcement isn’t far behind?