We also thought that the Pentagon's project for the next-gen Humvee was called the Future Tactical Truck System (FTTS). While that program does exist, the one to replace the current Humvee is called the Joint Light Tactical Vehicle (JLTV). AM General is working on a JLTV prototype for the program in conjunction with General Dynamics, but has yet to show it in public.
Despite it not being the real deal, the vehicle in the spy shots is still a bad ass truck that would like right at home on a battlefield, but we'll have to wait a while longer before we find out what the military will choose as its next whip.
[Source: World Car Fans]