According to this IGN article, Harmonix and Q Entertainment are teaming up to develop a localized version of Rock Band for sale in Japan. I'm wondering if US and European Rock Band players will be getting the Japanese tracks as DLC, in the same manner that US Rock Band players got to download the European tracks.
Sorry if this has been posted before.
If my plastic instrument band had a permanent singer, he'd probably say something like, "I've had to sing in German and French...And now Japanese?!? WHY YOU GOTTA DO THIS TO ME, MAN!?"