I'm not sure if you saw correctly, but I'm 100% sure this is not the 2015 PJ in his hands:
Thats the '13 RG paint for the 2012 PD. You are correct, that is not 2015 PD paint.
I think Faris probably just saw the beginning of every match because yeah, at the beginning of every match in that tournament, ARV has the 2015 paint stick in his hand. I went ahead and checked through replays as well to verify (one of the perks of Tennis TV subscription I guess). I know, way too much time on my hands these days.
My guess is that ARV probably had the RG edition PJ stick or two in rotation in his racquets. For example, his PCB match he was using both paint jobs in the match from what I remember.
Two pics, two different paint on sticks, same match:
The guy definitely needs Babolat to give him some new paint racquets. Although, gotta say, makes me happy to see someone using older paint too.