I'm going to take a ride to my dealer where I ordered the SS and see what information he has regarding the new Camaro.
As for the upcoming engines, I'm under the impression that by the time the car reaches production, there will be a different engie other than the LS2 for the Camaro.
As for the Shelby Cobra. In a recent comparison between the Shelby and a Corvette C6, the C6 was fractionaly quicker in 0-60 and 1/4 mile times. A C6 ZO6 would widen those times against a Shelby.