The images you see here were first published by Jalopnik. It's not clear how the website got its hands on these photos, but it wasn't able to gain access to any accompanying information.
Currently, the Trailhawk name is in use on the smaller Cherokee and Renegade crossovers. On these models, the Trailhawk variant sits near the top of the family tree, and features a "trail rated" suspension package, off-roading upgrades, and a more butch look.
Like its smaller brethren, the Grand Cherokee Trailhawk features the sub-brand's signature red tow hooks. Other cosmetic tweaks include a partial black overlay for the bonnet, dark grey badging, a blacked out grille and surrounds, and new alloy wheels.
To our eyes, it's also equipped with raised suspension, and knobblier, more off-road friendly tyres.
The company last sold a Trailhawk version of the Grand Cherokee in 2013, prior to the big SUV gaining its current facelift. Back then it teamed 18-inch alloys and Goodyear Silent Armour all-terrain tyres with the brand's Quadra-Lift II 4x4 system, air suspension and a 3.0-litre turbo-diesel V6.
As is common with these sorts of leaks, expect for Fiat Chrysler to move forward its release of specifications and details. Stay tuned for more news as it breaks.