This news comes from gonintendo http://gonintendo.com/?p=56416
Nintendo Power keeps hitting us with some great stories! They have confirmed that Oboro Muramasa Youtouden will indeed see a release in North America, and it’ll end up being one of the three mystery games that Marvelous was talking about. The title is getting a new name as well, Muramasa: The Demon Blade. This is a huge announcement in my opinion…another fantastic game to look forward to.
I can't wait for this game.
"To love and to cherish, in sickness and in health, for as long you shall be resurrected from death in the church"