I get that some guys want the "newest" of most things and want to be the first on their block to have something.
The new vette is a total redesign and I never buy anything the first year it is released. Too many issues always crop up that require running fixes.
The other problem I have with buying the "new" model is what's already been mentioned here: the buying frenzy to be "first". It always drives the prices up to stupid levels. Even if GM does sell them to the dealers with an MSRP, the dealers almost always start jacking up the prices to take advantage of "the hype".
Much better (IMHO) to buy a second or third year model. You almost always get a better product and definitely get away from the "buying frenzy", which gives you back some leverage when talking price with the dealer.
As long as you can resist the "jones-ing" urge when that first C8 goes buy you on the street.....
I also think every new car is grossly overpriced, as a result, I've only ever bought one new car (for myself) in my life. That would be my F-150Lariat, as a retirement gift to myself.