It will be revealed at the Paris Motor Show less than three weeks after the first of the breed, the DS3, goes on sale in Australia.
The DS4 will be followed in 2011 by the DS5, which sits above the C5 range and is rumoured in Europe to contain Citroen's first diesel hybrid drivetrain.
The DS4, like the DS3, takes the mechanical package of an existing Citroen model and gives it a major style tweak to create a sub-brand for fashionista around the world.
Citroen describes the DS4 as a blend of creativity, dynamism, exclusivity and versatility. It sits slightly higher than the C4 with a premium cabin treatment including top-quality leather seats inside a giant panoramic windscreen.
Although the car looks like a coupe it is actually a four-door that Citroen says can carry five adults.
"Reinterpreting cues opened up new possibilities, bringing practical and surprising solutions to automotive mobility," says the car's designer, Marc Pinson.
It is already set for Australia, although Citroen is not talking about pricing beyond admitting it will cost more than the C4.
"The car will be coming here, in the third quarter of next year," says Citroen spokesman, Edward Rowe. "It's based on the C4, which will probably be in the second quarter. We're launching C3 and DS3 almost back-to-back this year, and the same with C4 and DS4 next year."
"The cars the DS4 will be pitched against are the Audi A3, the Alfa Romeo Giulietta and BMW 1 Series. It's in the premium end of the category, where the C4 is up against the Golf and Focus."
