In watchOS 9.3 for the Apple Watch, Apple adds a few new features and improvements. For example, a new watch face is available that matches a new Apple Watch strap and new iPhone wallpaper. 
WatchOS 9 now has all the promised functions available: there were no more new additions which were postponed and not yet available. In watchOS 9.3 we only find a new watch face and some small improvements behind the scenes. Here's what you need to know about watchOS 9.3.
watchOS 9.3 available
As announced last week, watchOS 9.3 adds a new watch face to the Apple Watch. It's about the Unity Mosaic watch face, in celebration of Black History Month. It is now the third time that Apple has introduced a new Unity watch face at the end of January. The dial consists of colored areas (the characteristic colors red, yellow, green and black) that together form the digits of the digital dial. After downloading watchOS 9.3 you can add the watch face like you add any new watch face.
The watch face belongs to the new Black Unity 2023 band. This year, Apple has opted for a woven sports band, after previously discussing the regular sports band and the braided solo band. The new tape retails for €49.
Apple also talks about general improvements and bug fixes, although these are not specified in the release notes.
watchOS 9.3 release notes
Here are the official watchOS 9.3 release notes for the Apple Watch:
watchOS 9.3 includes new features, improvements and bug fixes, and offers a new watch face, Unity mosaic, to honoring Black history and culture in celebration of Black History Month.
For more information about the security aspects of Apple software updates, please visit the following website: https://support.apple.com/kb/HT201222
Download watchOS 9.3
To update, do the following on the paired iPhone:
- Go to My Watch > General.
- Tap Software Update and wait for the update to download.
- Put the Apple Watch on the charger and wait patiently for the update to install.
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While the Apple Watch is updating, keep the paired iPhone nearby so as not to disturb the update process. Updating the Apple Watch can take hours, so please be patient. In any case, make sure that the connection to the charger is not lost. To complete the installation, it is required to connect the Apple Watch to the charger, so keep that in mind.
You can also update directly via the Apple Watch itself:
- Open the Settings app on the Apple Watch.
- Go to General > Software update.
- Wait for the Apple Watch to start searching for the update.
- Tap Download.
- After downloading, place the Apple Watch on the charger. The installation starts automatically.
Can't install? For watchOS installation problems, read our related article.
See also 
Can't install watchOS? These tips will help
Are you experiencing watchOS installation problems? Can't set up the latest watchOS update? In this article, we'll help you get started if you're having trouble updating your Apple Watch.
Note: keep the responses on-topic, concrete and clear for others. Personal status updates on whether your download started/successful add nothing to the discussion. It may also take a little longer before the update is visible. You do not have to report this either. These comments will be deleted.