Sprint to deploy WiMax in 10 U.S. cities in 2009.

"By rolling out its WiMax services in major cities, Sprint is hoping to stay ahead of the curve of rival carriers AT&T and Verizon, which each plan to launch their own 4G mobile data services based on Long Term Evolution (LTE) in roughly two years' time. LTE is a modulation technique that is the latest variation of Global Systems for Mobile Communications (GSM) technology and is seen as the natural progression of High-Speed Packet Access (HSPA), the GSM technology that is currently used by carriers such as AT&T to deliver 3G mobile data services. "