As far as engines, they are mentioning a new 1.8 Liter Turbo with 180hp. The same engine will be used in the Jetta and Beetle soon. With less power.
They also mentioned this; "Its combined fuel consumption is 5.6 liters per 100 km (42.00 US mpg), equivalent to 129 grams CO2 per km (207.61 g/mile)."
42 US MPG seems pretty amazing for a combined rating.
Meanwhile, this car will be completely invisible to everyone when it comes out....