Looks like drittal was right. Ram appears to be adding a hood scoop to increase power output for 2018. The grill shape looks like it may resemble that of the 1500. Link
Oh my goodness... who cares? This is ridiculous. I was just reading that GM may have forgone the Bosch fuel pump for Denso in their new 2017 Duramax. That, to me, is more important of a change... reliability.