De Nysschen also noted that new powertrains are coming, including "new energy" units, which could mean hybrid, electric or fuel cell vehicles.
The Cadillac leader did not discuss timing for the new products. He wrote his response after the Aug. 18 debut of the Escala five-door luxury concept car during Monterey Car Week in California prompted an automotive website, The Detroit Bureau, to post a report about the brand's shrinking future product plans.
De Nysschen gave no details about the new flagship, but three possibilities seem evident: a version of the next-generation Chevrolet Corvette, which is widely expected to have a midmounted engine; a Bentley Bentayga-fighting SUV above the Escalade, which Cadillac has been studying, or a more distinctive vehicle such as the Escala, which has four doors and a rear-opening liftgate.
Another surprise in de Nysschen's reply included Cadillac's plan for a new small sedan he called "lux 2." Cadillac sales have been hurt in part because buyers are abandoning sedans for light trucks. In August, the new XT5 crossover was the brand's highest volume vehicle and Cadillac was the only GM brand to post a sales gain.
With the new CT6 large rear-wheel-drive sedan now in production, the front-wheel-drive XTS was expected to fade away. But de Nysschen wrote that the XTS will get "a major refresh."