https://www.caranddriver.com/news/a27156309/cadillac-ct5-v-future-performance-sedan/
It's all but confirmed that a V version of the new Cadillac CT5 sedan is in the cards. During a media presentation, Cadillac product marketing director Jason Sledziewski alluded to the idea that a high-performance variant of the new sedan is forthcoming. He also said that sedans are an important part of Cadillac's business because they allow it to continue building a reputation for performance-oriented vehicles like the outgoing ATS-V and CTS-V.
Cadillac's V lineup is lacking in terms of product these days: the ATS-V and CTS-V ended production, and the V-8–powered CT6-V, which was originally planned as a V-Sport model, doesn't seem to have gotten the full performance treatment like its forebears.
While Cadillac said that it isn't ready to talk about the potential CT5-V's engine, the company's Blackwing twin-turbo 4.2-liter V-8, which is already in the CT6-V, seems like the most logical choice. In the CT6-V, it makes 550 horsepower and 627 lb-ft of torque, which would blow vehicles like the 444-hp BMW M3 and the 503-hp Mercedes-AMG C63 S out of the water. It's also possible the CT5-V could use an upgraded version of the twin-turbocharged 3.0-liter V-6 that's already offered in the standard CT5; it makes just 335 horsepower in the CT5, but this same engine produces 404 horsepower in the CT6, so it's possible that Cadillac could tune it for a high-performance application. We can assume that a CT5-V would also benefit from a stiffer suspension setup, upgraded brakes, and extra visual aggression to set it apart.
We look forward to hearing more from Cadillac about the CT5-V when the company is ready to officially acknowledge its existence in the near future.