They probably switched for CAFE or factory commonality reasons, but according to the manual, you can use either. I'm not aware of any changes to the engine post -2012 that would change the oil viscosity requirement.

For you 2014 Pentastar owners, note that the oil filter changed:
2017 Jeep Renegade
2016 Dodge Challenger
2015 Jeep Grand Cherokee
2007 Crossfire Limited Roadster