Following up its first WiMax deployment in Baltimore in September of last year, Sprint on Monday launched WiMax service in Chicago and Dallas-Fort Worth. This in addition to the three markets being served in North Carolina.

And Sprint isn't even close to be finished. By the time 2009 comes to an end, the wireless provider says it will roll out WiMax in Honolulu, Seattle, San Antonio, and Austin, Texas.

"Sprint continues to lead the charge in rolling out wireless 4G in cities across America and the momentum continues to build," Todd Rowley, vice president of Sprint 4G, said in a statement. "Our aggressive expansion of Sprint 4G will include many new devices and capabilities that create increased performance and productivity while enhancing personal lifestyles on the go."

Looking ahead to next year, Sprint expects to launch service in several more markets, including Boston, Houston, New York, San Francisco, and Washington, D.C.