I believe there are 12 different sales regions in the U.S. for Toyota that each have different options and availability when determining how you want your car spec'd. That's why the online configurator asks for your ZIP code. Down here in SD, the only way to get a Trail Edition is with the KDSS bundled. Other areas (i.e. Texas), only sell the Trail Edition w/o KDSS because they expect people to be lifting their vehicles ( I would assume).
It's all different based on your region but you can still special order a vehicle with options that aren't usually available in your area. That process usually takes a few months....
I think that's the way it is here in Arizona as well.
I wanted a non-KDSS model, but they're not sold out here unbundled from the Trail model and the salesman couldn't find any non-KDSS models in the surrounding area.