the iPhone will debut in Japan on July 11th with Softbank. Since I have docomo I won't be able to get one. Plus, Softbank doesn't have the greatest range of use in Okinawa compared to au and docomo. In the inaka Softbank is 圏外 in a lot of areas still. Anyways, here's a link with more info about the iPhone coming to Japan.
http://www.apple.com/jp/news/2008/jun/10softbank.html