Sprint today continued to reveal more of its WiMax rollout plans. It still expects to launch coverage in the three cities previously announced later this year. Today it was announced all three hardware providers will build out coverage in additional cities that will launch in early 2008. They are Detroit, Grand Rapids, Indianapolis, Kansas City, Minneapolis, Boston, Philadelphia, Providence, Denver, Portland, Salt Lake City and Seattle. Sprint also announced it will sell both Wimax and dual-mode data cards from Samsung, ZTE and ZyXel.