GTR is a sales and press hit for Nissan.
R8 is a hit for Audi.
Both 911s and M cars keep coming and selling like crazy.
Honda doesn't have one car for sale in the US that will do even a moderately decent 0-60 time. All their current cars have been aligned to compete against Toyota, which means they are rubbish, boring appliances. They can't take down the King of Beige by fighting them with Beige of their own. They have no sporty lineup left and that new Civic-based Acura won't make their fortunes any better, it looks terrible and will probably drive that way as well.
That said, I think Honda desperately needs this car in their lineup and needs it to be a hit with the auto press to make any sales. So, I think it will come out as planned. They have to be careful though, if the press says the same thing they said about the CR-Z, no one will want it and Honda will kill it very quickly.
I think it looks promising, way better than the other two concepts. True and proper successor to the original car. Honda just needs to forget about all that "green" nonsense and build a competitive car.