Sumsung in indeed working on a 2017 version of the galaxy j5,
The devic surfaced in a certificattion filling with the wi-fi alliance, verry little is divulged from the, the dual band wifi support and the fact that the upcoming device is ranning android 6.0 marshmallow and not 7, 0 nougat, THE SAMSUNG gallaxy j5 2016 were released in april and jun, respectivvely, so it would mak sense to expect the gallaxy j5 2017 ,
Thanx,