Like clockwork, Japan is getting a rerelease of Kingdom Hearts: Birth by Sleep that'll feature all the content and English voice acting from the US version. For Final Mix, however, there'll be some extra bosses that will hit hard and hurt hard:
The new cloaked foe (dressed in familiar Organization XIII robes) has everything going in their favor with two blades, making clones, and delivering a hit that knocks you down to 1HP. That fellow clad in armor at the end must be even worse as Square Enix opted not to show footage of him in action. Both are sure to put everyone's skills to the limit.
Also new to Final Mix is Pete's awesome D-Link ability that'll let you run over enemies. Final Mix will also have a DLC code to give Cloud Strife a new costume in the upcoming Dissidia: Final Fantasy sequel.