Congrats on the new truck! I think you'll love it.
As far as concerns with these trucks I hope they beefed up the front end components. We had to replace ours (2007.5) at 50k.
The other concern is with the in tank pump. Again this is with our 2007.5 6.7L; Every time we were towing heavy and the fuel tank gets to just above 1/4 we would get a check engine light, limp mode, p0087-low fuel rail pressure. I traced it down to this
In tank pump exposed. We cured it by by-passing it with a sump mounted to the bottom of the tank.
The write up is from 2005 5.9's but we found the same setup in the 6.7.
Again, maybe they've solved this issue in the new trucks.
These concerns would not stop me from purchasing a new one because I know they're easy to fix.