The new CT6 has a 10 speed auto, all-wheel drive, mag ride and 500hp 553tq. The V-Sport comes with the same engine producing 550/627:
https://www.caranddriver.com/news/2019-cadillac-ct6-v-sport-official-photos-and-info-news
Details on the motor:
https://www.caranddriver.com/news/deep-dive-cadillacs-new-exclusive-4-2-liter-twin-turbo-v-8
https://www.caranddriver.com/news/2019-cadillac-ct6-v-sport-official-photos-and-info-news
Details on the motor:
https://www.caranddriver.com/news/deep-dive-cadillacs-new-exclusive-4-2-liter-twin-turbo-v-8