The 500 Trekking will probably have awd.
The Trekking will not come with AWD. However, AWD is in the works for NA; it will be called the 500X. It is set for next year, the 2015 model, or for 2016, depending how fast they can do their R&D on it.
BTW, I love the Trekking, just the way it is (with a good set of winter tires, you don't need AWD if you know how to drive) - in yellow, please! I can't wait to give it a try, and if my calculations are correct, it should run @ just under 2,000 RPM at 100 km/hr . Pretty good! I agree there is not much torque at this low RPM, though; that is why you have six gears to play with. The 6th cog is only for highway cruising, the way a transmission should be set - five gears to play and one to cruise.