While it doesn't sound particularly exciting, the name indicates a coming shift to a simplified naming convention for future Cadillac models. Familiar lettering like “CT” will be used for car models, with the number indicating the relative size and position of the cars in the hierarchy of Cadillac models.
“As we expand the portfolio, we can assist consumers in placing the cars within a structure, as they compare cars both within our showroom and across the market generally,” said Uwe Ellinghaus, Cadillac's chief marketing officer. “However, this will be an evolutionary process – we will only change a product’s name when the product itself is redesigned or an all-new model is created, as in this instance.”
Currently in development, the new rear-wheel-drive sedan will use advanced, lightweight materials and new body construction techniques to reduce fuel consumption while enhancing driving dynamics and safety.
Source: General Motors of Canada