Wow does it seriously make a difference to you guys if all the actors in this movie are Japanese/Asian?
That mentality is no different from Japan/China/Taiwan flipping out when they hired a Chinese woman for Memoirs of a Geisha, or my old anime club that nearly crucified me for not immediately agreeing to illegally download Avatar rather than see in theatres because 'not enuf aznz'. I've never seen the amount of outrage over not enough 'x' race in a movie than I do with movies adapted from somewhere in Asia.
People really love raging over 'race mixing' of any sort from their own perceived concept of the 'original right race' movies. Nothing is good enough.
I find the weird self-deprecating OMG WESTERN AND WHITE PEOPLE SUCK THIS IS GOING TO BE SHIT UGH WHITEWASHED, UGH AMERICA default mental state a little bit. Weird. Hold out until the trailer guys!
That said, they barely started casting for this movie, so I'll hold out until I see the trailer. Japanese Inception guy and Teen Tron guy in it so maybe it's worth seeing.
This.