9to5Mac published a story that Apple has released the first beta of watchOS 6.2.8 to registered developers.

Apple releases first developer beta of watchOS 6.2.8

Right after tvOS 13.4.8 beta, Apple has just released the first watchOS 6.2.8 beta version to developers. The update comes two days after watchOS 6.2.6 was released to the public, and as with tvOS, Apple has skipped version 6.2.7 for some unknown reason. We don’t know what’s new in watchOS 6.2.8 yet, but Apple is likely to be working on more bug fixes and general improvements to the Apple Watch operating system. 

Apple releases first developer beta of watchOS 6.2.8 - 9to5Mac