Here's what we know: Porsche is hard at work developing the next generation 911 lineup. At this point, the 992 911 Carrera should be nearly good to go, as it'll reportedly make its official debut this fall at the Paris Motor Show. Other variants will soon follow, such as the next 911 Turbo. While we've already seen some spy shots of the 992 911 Turbo coupe, today, for the first time, our spy photographers have spotted the new 911 Turbo convertible out testing in very familiar turf: the Nurburgring. How can we tell this is the Turbo and not the Carrera?

Just look at its wider fenders and the big rear spoiler. Sources tell us the 992 911 Turbo coupe and convertible will come powered by the must-have flat-six, which will of course be twin turbocharged. Total output is projected to be somewhere in the neighborhood of around 600 hp. Anything less wouldn't be good. Why? Because the current generation 911 Turbo S already produces 580 hp, so there's no way Porsche could reduce output in this case. Power will be directed to all four wheels through the latest version of Porsche's highly regarded seven-speed PDK dual-clutch transmission. Looking more closely at these photos, it's kind of hard to make out some of the Turbo's details.

Thanks to previous shots of the coupe version testing, however, we can see Porsche has done a nice job with the styling updates. For example, up front there are double LED light strips encased in the front grille. The hood extends all the way to the bumper, a styling trait borrowed from the classic 911. This time, however, there's a far more clear view of final shape of the air intakes on the rear fenders. We'll learn a lot more about the 992 911 Turbo throughout the year as hype will continue to build following the 992 Carrera's debut. So when will we see the new Porsche 911 Turbo? Based on Porsche's reveal history, new 911 Turbos launch roughly one year following the 911 Carrera's debut, meaning Frankfurt 2019 is a very good bet in this case.