I've learned from some credible sources that UNC officials will be installing field turf at Kenan Stadium for the 2017-18 seasons while the new indoor practices facilities are being constructed. The turf should only be a temporary deal as the stadium should return to natural grass for the 2019 season.
The reason for the move to the artificial surface is so that the team can use the stadium as its practice field during the construction of the new facilities.
I'm not a fan of turf being installed at Kenan, but I do understand its need for this circumstance. Land is a pretty valuable and hard commodity to come by at UNC so this was pretty much the only viable alternative.