Sprint's WiMAX-based 4G service will get its first pocket router early next year as a leak of training material today has revealed the carrier's plans. A mobile hotspot from Sierra Wireless, the Overdrive, should supply up to five users with the up to 6Mbps Internet access with 3G as a fallback. In a unique twist, it will have an SD card slot for storage and will treat this as a network-attached drive for everyone using the same hotspot.
