Looks like the only rhythm game Red Octane cares about anymore is Guitar Hero, as they've categorically denied making new dance pads for the 360—or any other system: "There are no immediate plans to create new dance pads outside of the current products available." [Kotaku]
well there's BMIIDX series which is the most widely enjoyed rhythm game series in asia. guitar hero is just a rip off of some other asian game if i remember correctly. think it never got big in asia cuz it looks way to corny and rockbands weren't ever quite so big in asian pop culture.