Apple is expected to roll out watchOS 7, the next big software update to the Apple Watch, real soon. (In fact, they might roll it out as soon as tomorrow when the Apple Watch Series 6 is expected to be officially announced.) It’s going to bring new features to existing Apple Watch models, including the Series 3, Series 4, Series 5 and the Series 6(?).
If you have an older Apple Watch model, either a Series 2 or Series 1, it won’t be compatible with watchOS 7. But if you’re envious, this might be the perfect excuse to actually upgrade to a newer Apple Watch.
An all-new Sleep app.

Sleep tracking has probably the most-requested feature for the Apple Watch and now it’s here. It work basically the same as the third-party sleep tracking apps that have already been available for the Apple Watch, showing you your sleep data for each night, as well as compare it to other nights. The data it collects will integrate with Apple’s Heath app.
Naturally, using sleep tracking is going to drain the battery of your Apple Watch much quicker (which is the biggest reason why Apple hadn’t added it before watchOS 7). To combat this, your Apple Watch will notify you if its battery is below 30 percent and its getting close to your normal bedtime; this will remind put it on the charger so it doesn’t die while you’re sleeping.