As for it being plot driven, I must say that from the movies I've seen, it seems like it has a bit of an abstract style going for it, sort of surreal, dark, etc.  So, with that in mind, I'm thinking it'll rely heavily on visual storytelling rather than a very intensively plotted story filled with text, etc.  Just a thought.  Whether it turns out to be the case or not, I will say I'm a big fan of games that rely on the visuals to tell a story.  Ico did a great job of that, I think.  Likewise, I love a good RPG with tons of text, provided it's not annoying like the main character in FFX.  ;-)  Sorry, it's just how I feel about Tidus.  It just is.
Much of the writing in that game was bad...bad...BAD.*
*Broken Record Syndrome: I state this very thing about once every three days.  It's even starting to annoy me.