German magazine Auto Bild has published photos of design sketches of Audi's LA concept vehicle, which it believes will badged as the Audi Prologue.
Measuring 5.1 metres from front to rear bumper, the two-door Prologue may eventually turn into a production model, probably branded A9, that will sit atop the Audi range.
As can be seen in the leaked sketches, the Prologue will feature an updated version of the company's single frame grille flanked by thinner headlights. At the rear there are thin tail-lights and flying buttress-style C-pillars.
The concept car will also provide the world a first glimpse of the brand's updated design language under Marc Lichte, Audi's head of design since the beginning of 2014.
Lichte's design team is also working on making each model more recognisably unique, as well as differentiating each of the major model lines (A, Q, TT and R).