The chances that the car could be designed for almost any other racing series are slim, since the aerodynamic configuration of the DTM-series cars is rather distinctive. No details on the car itself have been revealed. In fact, the only picture available is from Lexus’ mini-site for the upcoming Tokyo Auto Salon. Nevertheless, from what is visible in the picture - from the wider wheelbase to the front and rear canards - the Lexus IS-F Racing Concept is almost certainly a DTM-spec machine. But whatever the outcome, it takes some serious cojones to even contemplate bringing the fight to the Germans on their home turf.
There remains a possibility that it could be a Japanese Super GT racer - Lexus already competes in that series, and the IS-F could be an answer to Nissan’s replacement of its 350Z-based racer with the GT-R. However, apart from the lowered right height and widened stance, the IS-F Racing Concept shares very little in common with the Super GT GT500 class racers it would be competing against.
We’ll know some time after January 11th - when the Tokyo Auto Salon opens its doors - exactly what the IS-F Racing Concept is intended to do, but until then we’ll have to make do with conjecture and speculation based on fuzzy pictures and even fuzzier logic.