WiMAX, a new technology which can provide wireless internet access to homes in entire cities, is likely to replace DSL and cable as the means by which folks get on-line.
Described as being "to DSL as cellular was to landline", WiMAX shares many features with Wi-Fi, including low cost. And we all know how popular things that are low cost are.
Intel has begun shipping samples of WiMAX chips to customers, and WiMAX should be getting built into Centrino notebooks as soon as next year.