Apple announced the first major update to watchOS at WWDC 2015. The developer beta version of watchOS 2 was released on June 8, 2015.
The public launch of watchOS 2 is scheduled for September 16, 2015.Apple released Watch OS 1.0.1 before renaming the Apple Watch operating system to watchOS. The change was revealed at WWDC 2015. Watch owners can click here to learn how to update their Apple Watch.