WatchOS 7

watchOS 7 is the seventh major release of watchOS for the Apple Watch series developed and distributed by Apple Inc.

Product history
watchOS 7 is derived from iOS 14; both were announced on June 22, 2020 at the 2020 Worldwide Developers Conference, but are still in the beta testing stage.

Supported models

 * Apple Watch Series 3
 * Apple Watch Series 4
 * Apple Watch Series 5
 * Apple Watch Series 6 (anticipated to be announced in fall 2020) 
 * (support ended for Series 1 and 2)

Release history
Developers discovered that early pre-release versions contained code for a "Kids Mode" that uses different metrics for activity tracking of young users. However, this feature has not yet been implemented as of the developer beta.