Ars tests watchOS 4 on an Apple Watch Series 2—is the update worth it?

WatchOS 4 officially became available to all Apple Watch owners last week even if its release was overshadowed by the hype surrounding the Series 3 Apple Watch. The newest software update for Apple's wearable brings a decent amount of change, but it's not enough to make the Apple Watch feel like an entirely new machine. Some of the biggest new additions in watchOS 4 include a new vertical Dock, new Siri and Toy Story watch faces, a slew of new heart rate monitor calculations, and new Music and News apps.

While watchOS 4 is available for all Apple Watch models, I primarily tested it on an Apple Watch Series 2. Though we also spent time trying the new Series 3 Watch, I wanted to see how much of an impact watchOS 4 has for those who stick with an existing Apple Watch rather than upgrading to the newest model. And no matter which version of the Apple Watch you have, they'll all feel similar running watchOS 4.