Apple on Monday seeded the fifth beta of watchOS 4.3 to developers. Registered developers with the proper configuration profile can install the update over-the-air by navigating to the Software Update tab in the Apple Watch iPhone app.
WatchOS 4.3 isn’t quite the update as its 11.3 companion, but it does feature a handful of new features and improvements. There’s Nightstand mode in portrait (it was just landscape-only), a new charging animation, Music app control of iPhone music, and more.
Apple has said watchOS 4.3 will be released to the public sometime this spring, alongside iOS 11.3, tvOS 11.3 and macOS 10.13.4.