It is an International version after all and it comes on 3 discs. Subtitles are included along with Leona Lewis' theme song. There is no new content.
Sorry but it was previously thought that this special version was to include deleted event scenes and even some post-game missions. However digging deeper it’s revealed that yes unused event scenes will be present but not playable in-game.
You get to see them along with their accompanying script in a book entitled 'Final Fantasy XIII Corridor of Memory' that comes with FFXIII Ultimate Hits International. Also a newly created after story titled 'Episode 1' in the form of a novel is also in the book.
Final Fantasy XIII Ultimate Hits International releases on Xbox 360 in Japan December 16th. It's unclear if Square Enix plans a similar release for the PlayStation 3 version.