More has been leaked.
"Turns out, there are some very interesting features in the new Vette, stuff like active rev-mtaching for up and down shifts on the manual trans, a performance data recorder (will record data, plus video and audio of performance driving sessions!), and engine sound management, which lets the user select exhaust modes like auto, stealth, city, tour, sport, or off. Will this be standard equipment, or optional gear? We don't know, but when we find out, we'll let you know"
http://blogs.popularhotrodding.com/6819066/hard-driving/2014-corvette-photos/