Re: 991.2 GT3
Looking at Porsche's current known road map, then taking into account of Porsche's race cars and one should have the following conclusion.
.2 GT3 is coming in March, .2 GT2RS will be summer/fall.
Porsche had just updated their 3 race cars. Cup car always follows their GT3, which it just did.
The GT3R and GT3RSR, which were based on the GT3RS, were just updated to use the new engines, and in the RSR's case, a waiver for the mid engine change.
FIA rules dictate that a race car has to stay pretty much the same for 2 years. So the 2018 car is the one Porsche can make major changes. Which I certainly see them do, slapping a couple turbos on to remain competitive with Ford, Ferrari, and even Aston Martin. The latest has already put a V12TT in the DB11 and that means their race car should have them soon, either they switch to racing DB11s or a new Vantage that will have turbo power. The switch to mid engine might help a bit but I cannot see them being competitive with the NA motor anymore.
Porsche could theoretically homologate the GT2RS as the base for their 2018 RSR, perhaps also keeping the mid engine layout. A RS's bodywork is certainly better aero-wise than a regular 911, so I don't see them using a regular 911 body if they have alternatives.
Now if Porsche really switch to turbos for their race cars, there is no need to keep a GT3RS around anymore, they can use the GT2RS.
I am more and more convinced that there wouldn't be a .2 GT3RS.
The .2GT3 will be one of the last NA GT cars, barring any more special edition unicorns.
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