Carrara:

 But I bet we'll have to wait until 2014 until the RSR, considering just how astonishing the new RSR is.

Easy does it. This "interim" version of the RSR has not raced yet, so we don't know how its going to shape up against the opposition.

This "current" edition of the RSR remains based on the 997 , but with wider front track (a la 991) and I am sure some other new parts. I prefer to think of it as a "interim" car.

As for 2014: I  think the introduction of a new 991 GT3 RSR in the same year that Porsche launches it's LMP1 project may be a stretch for the Motorsport department. It's doable, but if I had the choice, I would not launch two separate racing models in the same year.