I asked our fleet sales manager at work( work at a chevy, gmc,buick, toyota and scion dealer, and owner owns most others). I was asking him about when medium dutys (4500 & 5500) trucks would be out. To that he said probably 2016 or 17 but that the all new redesigned light duty 2014 trucks( suppose to be some diff. engines too) will be out this spring. Tomarrow is the "release" date, which means that you can see some pics and specs that were all just speculation till now.
I didn't realize the date or I would have run down to sales or fleet and seen what they could show me early.
As to the early model year release, they did the same thing to tahoes in '06 with the new '07s for sale in early '06. Really they do the same thing on rvs. Reason then, on tahoes was it was way cheaper to produce, so swiching early saved $.
Probqbly the same now, I know they are supose to be lighter and mire fuel efficent.
- as to the lots full of '12s and '13s, the dealers always stock up on older year models, because when more rebates are offered on them, they sale more because of price. And we are FULL OF THEM at work, we are having a hard time finding places to park shop work and even hard driving around, and our dealership is on like 18 acres, this is the most I have ever seen, must be because of '14s comming.