The Class of 2017 camo was given to players who created an account anytime during 2017. Any player who created an account and logged in during 2017 was awarded the armor and weapon version of this camo in early 2018.
This camo cannot be purchased in game and was originally seen briefly during a glitch when all the Class Camos could be previewed.
As with all of the Class camos, each player is only given a single camo that corresponds to the date they joined. This camo can be applied to be both Armor and Weapons.