reply to Eek2121
Re: No Coverage In under a year they plan to transition to Sprint LTE. At that point they'll supposedly allow you to swap your device for an LTE capable (perhaps for an upgrade fee?) I believe they plan to have WiMax/LTE/EVDO devices.
The reliance soley on WiMax is temporary and you should at least get Sprint 3G coverage, if not LTE when available and WiMax where available.