Cool. I kind of thought the next one should be smaller.
I will say that 2014 is kind of a ways off to be making plans based on predictions. But I'd be interested in what the new car looks like. And how it drives. A 400hp DOHC V8 in a more aerodynamic and lighter car than the 2005+ should be slick.
I'd guess the base GT will still be a solid axle. That's kind of the thing by now. Porsche has flat sixes in the rear, Viper is a V10, and Vettes have leaf springs. These are the things that set these cars apart from the rest of the market. Ford has set a precedent by offering Cobras with IRS, so they could easily offer it again only on the top models. But I'm just guessing.