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.