Although interior spy shots show a six-speed shifter, the upshifts in the video are far too quick to be done manually. It's most likely the new 10-speed automatic that was co-developed with GM. It's optional in the Camaro ZL1 and 2018 Ford Mustang (including our new long-term GT) and standard on most variants of the Ford F-150, including the Raptor. In its sportiest setting, the transmission locks out the top four gears and behaves like a six-speed automatic. The Camaro ZL1 already makes 650 horsepower and 650 pound-feet of torque, so the GT500's 700-plus horsepower output isn't that far of a stretch.
Beyond the video, there isn't much here that we haven't already seen. The front fascia has more aggressive intakes than a GT350 and uses the headlights from the pre-2018-refresh Mustang. Though it's a little difficult to make out, the cobra badge rests right in the center of the grille. The louvered hood packs a prominent bulge in the center, making room for what we believe to be a supercharger. The brakes appear to be larger than those on the GT350, but we'll have to wait for the full reveal to get the full details.