Fan video, the JL’s not even in it, nor is the first JK or the 2012 update (they chose the 2011 interior update for the video?).
Also, even if a 315HP Pentastar was coming to the JT, it doesn’t mean that it’s coming to the JL, just like the RAM gets a 305HP gen1 Pentastar right now.
I could see the Ram 1500 and JT getting the higher power Pentastar, but I would not expect it in the JL. I would just be happy if the JL made Grand Cherokee numbers.
Another thing to consider if we give this vid even an ounce of credibility, is that this HP number might also be a Pentastar + BSG number by that time (next fall) when the JT comes out, and with the BSG contributing about 20HP, then that would be a number closer to this than the plain Pentastar we will see at the end of this month.
I seriously hope they'll keep the current Pentastar and not put the exhaust regurgitating, variable reliability timing, high compression junk. Yes it has a bit more torque but you'd not be able to tell easily. Much better to keep it simple so people can do superchargers if they want torque and power gains that can actually be noticed.