This isn't a GPS module, but rather a chip that compliments GPS modules by using dead reckoning to estimate position during GPS drop-outs. APM and Pixhawk do this already in software, but it would be interesting to see if a stand-alone hardware solution is useful for UAV purposes (this first chip is aimed at automotive use).
The u-blox 3D Dead Reckoning chip uses a bevy of accelerometers, gyroscopes, and speed sensors to calculate a car's exact location, no GPS signal needed. By measuring the direction, speed and distance the car has traveled since the last GPS check-in, the chip can tell if the car's still on the intended route, or if it's veered off into lost-land. U-blox's demonstration video, narrated by a charming Walter Cronkite imitator, explains in more detail:
The 3D Dead Reckoning chip isn't packed in to any currently-available GPS systems, and it's not really clear whether the company intends to sell these things to equipment manufacturers or directly to consumers—though the press release indicates it shouldn't be too hard to install yourself.