Sleep tracking on Apple Watch may have just improved tremendously with watchOS 11. The latest beta update introduces automatic nap detection, a long-awaited feature. This means your watch can now track your sleep even if you forget to turn on Sleep Focus, providing a more comprehensive picture of your overall sleep health. https://www.notebookcheck.net/Apple-s-watchOS-11-can-detect-when-you-fall-asleep-and-track-your-naps.849880.0.html
My Skagen Jorn Hybrid Gen 6 has had this feature for almost 2 years.
Way to go, Apple. Your broken beta version has finally launched. Still have some catching up to do, though.
My samsung watch has been doing this for 5 years...