Laborsmith is right. You have to expect this type of wait when you're pre-ordering a car that's entering a new generation. It doesn't matter whether it's Chevy, Ford or Toyota. GM has to make sure that they're as close to perfect as possible before they release them. I'd rather wait a little longer for a car that's perfect than get a car that's doesn't stop when you hit the brake pedal.
You'll get your new Stingray soon, and I guarantee it will be worth the wait and drama