I think this is a pretty fast response.
I bought my 11 RAM LongHorn HO Dually Drew cab 9/2011. I have been extremely happy with the truck since and now have over 60K on the clock.
I talked about a air ride for a long time and finally ordered one 12/2/14 it is supposed to be in about 2/27.
The 15 on order is a LongHorn Dually crew cab 4X4 with all options except auto dim and auto wipers and it will have air ride. Also it will have the Aisin trans and 4:10 gears. Same white/gold trim and bumpers as the 11.
I was told originally 6-8 weeks and it will be nearly 13 weeks by the time I pick it up.
Have a 15 MobileSuites 39TKSB3 on order. Hope to pick it up mid April.