The next Apple Watch is expected to finally get one major feature it's been missing that Fitbit has offered for years. Here's everything we know so far. (AAPL)

Apple is expected to release a new Apple Watch in 2020, as it's done every year since 2015.The biggest new addition to this year's watch is expected to be sleep tracking, a feature that would help Apple catch up to rivals like Fitbit and Samsung.Otherwise, the next Apple Watch, which is expected to be called the Series 6, is rumored to come with faster performance and better water resistance. Here's what else we know.Visit Business Insider's homepage for more stories.

Apple has released a new smartwatch every year since 2015, and there's a good chance 2020 will be no different.

While last year's Apple Watch brought improvements like an always-on display and a built-in compass, the biggest update expected to arrive on Apple's popular smartwatch in 2020 is support for sleep tracking. That's according to Bloomberg, which reported in early 2019 that Apple had been testing such a feature for a possible 2020 launch.

It would mark a significant upgrade for the Apple Watch, considering sleep tracking is the one major feature it's lacking compared to rivals like Fitbit and Samsung. That could further establish Apple's stronghold on the smartwatch market. Apple accounted for 47.9% of the smartwatch market as of the third quarter of 2019, according to Strategy Analytics, while Samsung followed with 13.4% and Fitbit placed in third at 11.3%. 

Here's a look at everything we're expecting to see from Apple's next smartwatch. 

Original author: Lisa Eadicicco