There's already a thread where a member has ordered a 2015 convertible.
Yes, they have. Big technology and reliability enhancements, as well as much more power. Turbo cars now have more torque and a better power curve than NA cars.
Remember when turbo cars had boost lag and only made power high in the rev range? Ain't like that anymore.
I drove the Ford Edge Ecoboost for a 10 day rental now that I think about it. No lag, but man was it weak. Probably too heavy of a vehicle for noticeable power.