Chevy announced their new 2015 Colorado will be available in the USA with a 2.8L Duramax Diesel starting in 2015 (I4 and V6 avalible in 2014). They have some photos on their website, so I threw one of the pictures up against AST2 to see how it did. It isn’t perfectly a side shot, but pretty close. The crew cab long box seems to "fit" the template pretty good. The crew cab short box or extended cab long box will be 1' shorter. There seem to be quite a few aero features, I noticed the low air dam in the front, less body seams, etcetera.
I am considering this truck as a future purchase, to replace my 1991 truck. I have two years to decide for sure.