The Shelby has recently undergone testing at the Nürburgring featuring a very large intercooler, leading us to believe the car has been given even more power. However, nothing is official as of yet. Previous reports have suggested that the Shelby may adopt a new supercharged 5.8-liter V8 engine. The engine can easily produce 620-hp which means the 2013 model will have a 70-hp gain over the current model.
Styling changes look to be quite limited at this point. Since the new model is still very early in production more may change.
Stay tuned for more info!
[Source: World Car Fans]