From my sources the scans for the second UNS game are in, meaning it's confirmed, I don't know when or if USA or Europe will get it, but I know it goes up to a "certain" arc involving a "certain" set of "family" fighting. Maybe later, who knows.
It seems it has SOME form of online, though i'm not sure if it's just leaderboard, or DLC, but it DOES have it.
there's a thread confirming that there IS a sequel in the works! Head on over there you won't miss it!! I guarantee it's gonna be a hot topic!! oh, and I saw a scan that involves Sasuke wearing his Akatsuki outfit so...yeah!!!!!!!!! Hope they release it here too!!!