Namco said in the past that the script would be reworked somewhat in the port, most likely due to complaints about the original versions story (you should see the hate on NeoGAF >_>). Well, some guy just posted this on NeoGAF:
For anyone that's interested, here's some very minor stats on how much additional storyline script has been added for a handful of characters (ie. not including additional battle grunts and what not).
Polka - 1.5x original script
Allegretto - 1.7x original script
Chopin - 1.7x original script
Serenade - 2.0x original script
Waltz - 2.2x original script
March - 2.3x original script
Don't know how much of a difference that'll make in the story itself but thought some people might be interested.
Sounds like some BIG changes.