Slashdot reports a potential WiMAX killer. Technology from xG Technologies supposedly is much more power and spectrum efficient. This xMax thing needs one base station, as opposed to 90 for WiMAX to cover the same area and it could run on a watch battery. It can produce a 7.4 Mbps/MHz/Watt signal, versus 0.0085 for EV-DO.
Interestingly, the technology could also be used to boost DSL performance.
There should be a demo for the US press this week.