Bit of confusion here. The Skyline name is/will only be used on that 4 door saloon, and the 2 door version. Both of these cars are codenamed V35 as the engines have now changed from the RB series(hence the model names R30/31/32/33/34) to the VQ series ...hence V35 model name.
The next generation GTR will drop the Skyline name to differentiate it from the 4 door cars and to give it more of an stand-alone-model-image. If the GTR is said to use twin turbo versions of either the VQ35, VQ30 or VH45.... it will then be know as the V35 GTR.
I've stopped worrying about how the new GT-R might look;
I've seen so many different front and rear treatments by the magazines over here that I've lost count.
I mean they still haven't even released any definite engine details so I'll just wait and see. Either way, I doubt that it will be very similar to the Celica.