This comes just a day after our spies managed to snare the first images of the next-generation A5 coupe. Like the A5 coupe prototype that we featured yesterday, this S5 development vehicle is clad from top to bottom in swirly camouflage.
The overall shape of the prototype is clearly very respectful of the current car, although we can see that the new car features larger headlights, a ridged character line down the side and prominent rear haunches.
A body that uses a selection of high-strength steel and aluminium should see the new car weigh around 100 kilograms less than the current-generation.
The current S5, as well as the related S4 sedan and wagon, has under its bonnet a supercharged 3.0-litre V6 with 245kW of power and 440Nm of torque. This is tied to a Quattro all-wheel drive system and a seven-speed dual-clutch transmission.
In the S5, that's good for a 0-100km/h time of 4.9 seconds.
Despite being less hefty than the current S5, rumours indicate that Audi does not want to be seen as going backwards in the power race. This will likely mean a maximum power rating for the new S5 of somewhere between 250 and 260 kilowatts.