Ahead of its world debut at the Frankfurt Motor Show, Lexus today published this teaser sketch of a premium compact hatchback concept, which is said to preview next year's production model that will challenge the BMW 1-Series, Audi A3 and Volvo C30 models. "The concept will demonstrate a mix of technical innovation and ground-breaking design that promises to raise the bar in the premium compact segment," the company said in a short statement The Japanese automaker did not disclose any other details on its "baby" model but rumor has it that the concept car will feature a hybrid drivetrain. Expect to see more information and new teaser photos of the car being released closer to the Frankfurt Show opening.