Holy crap! What company completely stops production on a model for a year to do what they say they're doing? They're gonna have 2013 Vettes and 2014 Vettes. 
Brian, back many more years than I like to remember, I was a service manager at a Chevy/Pontiac dealership up in Clare MI. I remember when the new model year cars came out for '83. There were NO '83 Vettes. Although while at some training in Warren MI, I had the opportunity to work on an '83 Vette. They made a few for preproduction '84 and to use for training and testing. They were distroyed after use. Just think, that was 30 years ago.
My instructor in those classes had two '69 Z28s. He had a 302Z and a 350. He said that the 302 was a scary car to drive as it was not a torque monster in the least and when the power came on, it was like the old style turbos that spooled up and kicked butt. He much preferred driving the 350 on the street as it was still fast by those standards and was a lot easier to handle on the street.
Anyway, so here was GM cancelling the Vette for one year, who'd have thunk it?