This appears to the same as the heavily-camouflaged prototype we saw before, but the new photos are clearer and show us more of the GLE's profile. Despite being heavily disguised, it's clear to see how the upcoming GLE, which is expected to be known internally as the "W167," is smaller and rounder than the current W166. The prototype appears to borrow some styling cues from the smaller Mercedes-Benz GLC, while having a more rugged look with wider wheel arches.
The current GLE was introduced as a 2016 model year, but still retains the same underpinnings as the ones found on the 2012 Mercedes-Benz M-Class. With new competition from Jaguar, Porsche, and Maserati, the next-gen GLE will receive a major update on the outside and inside. A longer wheelbase would result in more interior space, and we expect and interior redesign similar to the new E-class - in other words, far more luxurious and modern.
As far as powertrains go, we expect the GLE to borrow new Mercedes-Benz E-Class. That probably means two versions of the twin-turbo six-cylinder engine and a high-performance one featuring a twin-turbo V8. A plug-in hybrid will be offered, as well, and we could even see the four cylinder from the E300 sedan. The engines should be matched to Mercedes-Benz's nine-speed automatic transmission with all-wheel-drive coming as standard. With Mercedes-Benz continuing its SUV craze, a new GLE Coupe would follow shortly after the completely redesigned GLE.