Well they could just not want to impose on the 360 ver, I mean if you can get the bulk of the new content (ie characters) for free, there'd be little point in buying the 360 ver. I'm hoping they still patch 1 down the line, especially considering this has a very low chance of reaching the states. Or they can do a PS3 port :3
But yeah until further notice might as well wait for 2, which is sad cause Rosa looks amazing :<