I found this little gem of an article where supposedly, Tabata and the Type-0 Team were starting to make an HD port of the game for PS3. Going so far as to say that the game was overambitious enough that it really should have been made for a major console as opposed to the handheld market. Unfortunately the project was cancelled. He also spoke of SE's idea of releasing the game in the West as a PSN only download that was compatible for both PSP and the Vita but that apparently got scrapped as well.
Its a shame this game seems to be trapped in limbo, not sure if the issue SE being hesitant to support the Vita or the aging PSP or if SE might be trying to not have too many pots cooking in the Western release with Tomb Raider, Lightning Returns and FFXIV being released this year.