The release date was today (02 Mar 2015). So they should be shipping soon if you were one of the early preorders.
RAP4 Kai, not V4-Kai.
Amazon delayed their shipment of Kai’s. Someone in another thread said arcadeshock shipped their orders. Anyone else experience the same?
I got a shipment notification from arcadeshock this morning. So I would assume it is ready to be shipped as the label must have been printed.