There were no real changes between the '14 and '15s. My Father has a 14 Laramie and I have the '15. The only tiny difference I could find was when it's cold out. In the 2015 you can choose to have the heated steering wheel and seat come on automatically at start, not come on at start, or remote start only. The 2014 didn't have the option to come on at "remote start only".
I received mine through a Fleet service so the price was about the same as a heavily discounted 2014. The fleet manager initially thought there was going to be a 3% increase between the 14s and 15s, and possibly a minor refresh (this was last fall before they came out). But Ram must have altered its plan and only boosted the new ones a couple hundred from what I understood.
It makes sense since Ram said it's upping their production of the 2015 this year to keep up with demand. Why refresh when their sales picked up more than the competition.. right?
Maybe they delayed that minor refresh until this upcoming year. Although it must be really minor if there is a major update due in 2017 (for the 2018 model year).
Upcoming Dodge, Ram, and Jeep trucks and SUVs