Stop/start will be new for 2015. When you come to a stop at a light (for example) the engine will shut off, and re-start when you press on the accelerator pedal. Unlike Eco mode, you will be able to default this feature to "off".
2014 Overland, 3.6 L
Fumoto Qwikvalve, Ionic CXV running boards, Michelin X-Ice Xi2 snow tires