Valk not coming out "now or next week" is pretty -your mother is a classy lady- ridiculous on its own, but it won't be next week, month, or even next year, he's never coming to 360 at all, and if he did, they'd probably make him Japan 360 only.
Uhhhhhhhhhhh... why would they do that? They've already released the games for both systems, the previous DLC for both, patches for both, Makoto's out for both systems... So why would they decide that one little DLC shouldn't be given to 360 users? That's silly. From a business standpoint, it also makes no sense. So try to stop taking the delay as a vendetta against 360 users because it's obviously not. Take a deep breath and gather some patience.