We're still waiting for some specific US launch details for the Xtion Pro and Wavi Xtion motion sensors that ASUS showed off at CES earlier this year, but it looks like folks in Japan can now already get their hands on half of that duo. Unity Corportation has just announced that it's releasing the Xtion Promotion sensor (complete with an SDK) in the country for ¥19,980, or roughly $240. That should work similarly to a Kinect considering that PrimeSense is responsible for much of the technology behind it, although you should be aware that this one is aimed s