Yes, KDDI Mobile is coming to the US. And no, they won't be bringing any of their cool phones with them.
They will operate as a virtual operator using Sprint's CDMA network, but they will only cater to Japanese- speaking people over here. I don't know if this will significantly expand their existing 28.2-million user base, but with phone offerings like the bah Sanyo 2400 and the smleh LG 225, who cares? Nothing to see here folks, please drive thru.
Japan's KDDI To Launch MVNO in the USA [Cellular News]