MacRumors published a story that Apple has released watchOS 6.2.8 with car keys support.

Apple Releases watchOS 6.2.8 With Car Keys Support

Apple today released watchOS 6.2.8, the 10th update to the watchOS 6 operating system that runs on modern Apple Watch models. watchOS 6.2.8 comes a month after the launch of watchOS 6.2.6, a security update.

  Apple Releases watchOS 6.2.8 With Car Keys Support