I think the fact that they made an offline version is an indication that an international release will happen.
Of course, this is wishful thinking, but I believe they probably wouldn't have bothered for Japan alone as they made quite a bit of money with the Online X already (as I understand).
In any case, I absolutely hope to play it.
From the footage it looks as if you get a party member of each race. I doubt you can customize them, but I'd love it if they all had a character creator. This would be my dream ever since IX: Customizable party members but each with a fixed character.
Having said that, it's not even certain yet that we can customize the hero. One image showed a heroine instead, so we'll at least get that choice, but I imagine the player character will be customizable since all the options are in the original X already.