I'm curious how much an improvement just the new engine will be if they retain the same transmission. Noticeable, I'm sure, but looking at the rear-wheel dyno numbers for the JK, the drivetrain soaks up a ton of power. I've seen an average of 130-140 at the tires, that a loss of 70hp, or just over 30%. Chrylser's own engine dyno numbers were actually 205 crank horsepower from the chart I saw. 30% is ridiculous.
All I can add is about the transmission is none of the other vehicles with the Pentastar are mated to a 4 speed auto. they all 5 speed or higher. supposedly the current manual will still be in the 2012 with the Pentastar.
Jeep now plans to revive one of its most hallowed nameplates, the Grand Wagoneer, for a new upscale SUV with seven-seat capacity. That was the promise made by Fiat-Chrysler CEO Sergio Marchionne who announced at a press conference at the 2011 Detroit Auto Show this week that a new Grand Wagoneer will arrive by January of 2013.
It will share a platform with the recently launched Grand Cherokee and the Dodge Durango. Interestingly, 2013 will also see the launch of a Maserati SUV based on the same platform.