What Volkswagen model is this? VW NMS?

This Volkswagen is spied testing in America without any cameos, something with the size of Jetta, which looks similiar to a Golf but wasn't a Passat. Could this be the New Midsize Sedan that VW is touting that it will build in its new Chattanooga Plant in Tennessee? Will this be a good bet for VW? Cos I can't figure out how different can they position this in between Passat and Jetta.

Source: WRCBtv