A pair of teaser images released today by Subaru reveal a version of the earlier concept that looks near production-ready; the wide gullwing doors and slim wing-mirrors of the earlier concept having been replaced by more conventional items.
The headlights and front bumper have also been transformed: there's a new headlight design, a broad grille-frame and deeper vents and foglight housings.
Like its predecessor, the ATC will be powered by a hybrid system. Rather than the earlier concept's 2.0 litre engine, the ATC will pair a brand-new 1.6 litre direct-injected boxer engine with a single electric motor.
Subaru says the 1.6 litre boxer engine will become a feature of the carmaker's future engine range.
The hybrid system has an Electric Vehicle mode, which allows AWD motion using only the motor at start-up and on low-speed drives. When decelerating, the regenerating mechanism uses the motor as a power generator.
Energy will be provided by a lithium-ion battery. For now, power and performance figures for the petrol and electric powertrains remain a secret.
Subaru's new Lineartronic CVT transmission will also feature, along with the brand's Symmetrical All-Wheel-Drive system.
The Advanced Tourer Concept will debut alongside the final production version of Subaru's rear-wheel-drive sports coupe, the 2012 BRZ.