Sprint's Overdrive from Sierra Wireless has been handling the WiMAX mobile hotspot duties on Sprint for most of this year, but it's been walking that road alone -- Novatel, which took the mobile hotspot concept mainstream with its venerable MiFi line -- has been absent from the 4G race so far, but it looks like that's about to change. We just witnessed a so-called MiFi 4082 earn an FCC filing a few minutes ago, offering both CDMA / EV-DO and WiMAX in a single package, presumably prepping for a launch on Sprint to either replace or supplement the Overdrive. Considering the Overdrive's size, stability, and boot time, another ent
