I agree that past model GT-R's aren't supercars, but considering the hype and advertised performance the new model is supposed to lay down it could break into "supercar" territory. Of course, that all depends on what you consider a "supercar" as opposed to a super car.
I still think the new GT-R is rather uninspiring, primarily due to the C-pillar. I do look forward to seeing what kind of numbers it will put down once on the street though.