All of the test cars we've seen so far have been black. These photos show a yellow 992 completely uncovered. As expected, the rear lighting looks straight off the 2018 Porsche Panamera or 2019 Porsche Cayenne. The lower half of the rear bumper has been updated, too, with vents on the side and a black panel spanning the car's width. The quad exhaust tips and the lack of a rear wing suggest that this is the new Carrera S, though it's hard to say for sure.
We don't know when the new model will be released, but expect to see more news this upcoming auto show season.