Cadillac said Tuesday it will expand its V-Series performance sub-brand with the arrival of the CT6-V sedan in 2019 (formerly known as the CT6 V-Sport), with plans to add high-performance variants across its portfolio. The flipside to that expansion is the sunsetting of its two existing V-Series performance cars, the ATS-V (both coupe and convertible) and CTS-V sedan. Two new unspecified sedans will slot below the CT6 in Cadillac's lineup, a spokesman said.

The CT6-V will arrive next spring, roughly a year after it bowed at the New York auto show. It will feature Cadillac's new "Blackwing" V8, a twin-turbo engine that displaces 4.2 liters and produces an estimated 550 horsepower and 627 pound-feet of torque, sending it through GM's new 10-speed automatic transmission to drive all four wheels.

A less-aggressive version of the engine will also appear in the CT6 Platinum model, offering 500 horsepower and 553 lb-ft of torque.

"Beginning with the debut of the CTS-V Sedan in 2004, the V-Series sub-brand sparked new life into Cadillac," Mark Reuss, executive vice president and president of GM Global Automotive Group and Cadillac, said in a statement. "As a result of the overwhelming response the CT6 V-Sport received when revealed in early 2018, we've decided to formally make it a V-Series, signaling the expansion of V-Series."

A Cadillac spokesman tells Autoblog the 2019 model year will be the last for the ATS-V and CTS-V. The ATS-V is powered by a twin-turbo 3.6-liter V6 that's good for 464 hp and 445 lb-ft of torque, an increase of 262 hp and 173 lb-ft from the base, four-cylinder ATS, which is also set to go to pasture at the end of the 2018 model year.

The CTS-V, meanwhile, boasts a 6.2-liter supercharged V8 under its carbon-fiber hood that puts out 640horsepower and 630 pound-feet of torque, good for a 3.7-second 0-60 mph time and a top speed of 200 mph. In a Quick Spin review last year, Autoblog Editor-in-Chief Greg Migliore called the car "old-school muscle in an Esquire-approved suit. It's 'roids and cufflinks."

As for what's next for an expanded V-Series, Cadillac has the new XT4 crossover, and already other companies are banking on performance versions of crossovers. Cadillac's also developing a less expensive luxury sports sedan called the CT5. It's also said to be planning a production version of the Escala concept starting in late 2021, so those could be possibilities.

"Three generations later, V-Series is recognized and coveted by many as a symbol of Cadillac Performance engineering," Cadillac President Steve Carlisle said in a statement. "In fact, our V-Series models outperform and often outsell their competitors. As we accelerate Cadillac's growth around the world, our V-Series will continue to expand the brand, enhance its image and attract new buyers to our showroom."