Apple developers unexpectedly released watchOS 8.1.1 update.
What is known
The firmware is designed for current smart watches Apple Watch Series 7. According to the official changelog, the new software version has fixed an issue that caused some watch owners to charge very slowly.
The update is already rolling out to devices around the world. To check the availability of OTA, you need to go to the Watch application on the iPhone and go to the "Basic" - "Software update" item. To install the system, the watch must be charged at least 50%.
A source: MacRumors