Not a day's passed after we caught word of Sprint's launch of Novatel's S720 PC Card
do we hear that Sierra Wireless has a proverbial one-two punch of WWAN modems up its sleeve, this time of the USB variety. First up in Q4 of this year will be the 595U, an EV-DO Revision A device topping out at a purely-theoretical 3.1Mbps downstream, followed by the quad-band GSM, tri-band HSDPA 875U humming along at 3.6Mbps in Q1 2007. Both USB modems look to be coming in sleek little packages with internal antennas and matching cradles, support location-based services, and have upgradeable firmware. If these things really look as slick as the press shots make them out to be, we may not be whining for a Rev A ExpressCard after all -- if the ship dates hold up, that is.