Not only does it not have a wing, but the large radiator scoops found on the new GT3 are gone. In their place is the standard 911 radiator grille with vertical slats. With these details in mind, we can safely rule out a more hardcore track variant of the GT3 like the GT3 RS. Instead, this car must be a bit less concerned with outright speed, and more about the driving experience. And a GT3 without a wing and with a focus on driving enjoyment sure sounds like a 911 R successor.
To recap, the 911 R used the GT3's mechanicals and most of the bodywork, except it did away with the wing and added a manual transmission. It was also limited to just 991 units, and Porsche made it clear that there wouldn't be anymore later. This would seem to preclude the possibility of a new one, but there would be an easy way around the issue: Call it something else. Porsche could call this car the 911 RS, for instance, keep all the GT3 mechanicals, add a manual, and sell as many as it wants. It would please 911 enthusiasts that missed out on the R, and keep R owners happy that they still have an ultra-exclusive 911 model. And most important for Porsche, it would make the company money.