It's gotta be a hoax. First of all, look at the appearance of the nose on that first picture. It's clearly been put on in a photo editing program, it's not a re-worked cg.
Secondly, once they've done as much as Square already has, going back and changing the game to add a larger nose... that's a lot of work and a lot of lost money.
Third, this is the only site reporting it. If this really happened, why isnt JUMP magazine all over it, not to mention American gaming mags?
And foruth, the character designs are very Japanese... no pretty girl will ever have anything other than a cute little nose.