This came as quite the surprise! A few of us in the community have been looking into it here and there and finding that someone determined that the entirety (or at least most) of the English dialogue/text existed in the game. (This may have been Normmatt?) We didn't know how to begin attempting...
they need to have a strong line up on the launch titles too. I think they should move metroid prime 4 to the next console because by now it has been quite a while and there's no release date scheduled yet