Clearwire up-ended WiMAX with news Wednesday that it would make LTE and LTE Advanced its primary 4G formats. The rollout will give it peak speeds of 120Mbps or more using the same 2.5GHz frequencies and network that it already uses. While it will be LTE at first, it will be upgradeable to LTE Advanced when it becomes available and hit "at least" 100Mbps.