BudsGunShop.com - Is this the 2017 model?

The newest model will have the LXX™ Trigger. The engagement surfaces are precision ground and polished. Overall tolerances refined. A new, wider trigger face increases trigger-to-finger contact, all for a more consistent and comfortable pull. Adjustable down to 2.5 lbs., the new LXX™ Trigger will amaze you with every single round fired.
I would call Weatherby Product Information with the UPC code for verification at: 800 227 2016 - Mon.-Thurs., 6:30AM-5:00PM PST

Guns don't run in model years. The best advise I could give you is to call buds or use the chat and ask if the can give you a manufactured date

You found it, Specifications and features:
Weatherby Mark V bolt-action rifle
.257 Weatherby Magnum
26" barrel
1-10" rifling
3 Round, Plus 1 in Chamber, Internal Box Magazine
Magnum 9-lug fluted bolt action with 54 degree lift
LXX factory tuned, fully adjustable trigger
#3 contour free-floated stainless steel fluted barrel with recessed target crown
Full length aluminum bedding block
Composite stock with matte gel coat finish and spiderweb accents
Raised comb Monte Carlo design
Pachmayr Decelerator pad
SUB-MOA Guarantee from Weatherby
46 5/8" overall length
13-5/8" length of pull
7/8" drop at comb
1 5/8" drop at heel
5/8" Monte Carlo
Weighs 8 1/4 pounds