Montana Sky don't know for sure but a GM Rep same there want be any major changes, Grill and possibly the front Bumper. I sure hope they make no changes to the Duramax/Allison its awesome
. This is the quickest 3500HD I have ever owned, stand on it and it when get up and go.. The only thing I wish they would change is add a gauge for the DEF, haven't had to add any fluid yet but will probably pick up a 2.5 gal from Wally World this week-end....