The F-150 will be changing as well, but so will the SD. They simply have to, and the truck must lose a LOT of weight to gain mileage...
15 years is a long, long run, and with Dodge raising the bar, and GM building their new platform in a HD, Ford must follow in order to keep the lead.
More importantly, the 16' Federal fuel mandates kick in for big rigs, so I assume small diesels must also tighten up their fuel mileage to comply. Peterbilt Motors have already started phasing in new 16' changes on their 14' models in order to ramp up smoothly. Last year, Pete totally dumped drum style brakes in favor of lighter disc brakes By 16', the 389 may be gone.
I would expect the same aluminum body panels, and other lighter, more aerodynamically sound parts to make their way. I'm guessing the Atlas Concept will be more Super Duty than F-150, and I am GOOD with that look..
With any luck, we'll see something totally new by this time next year.