Here’s the language from the iOS 9.3 beta release notes:
In iOS 9.3, the Apple Watch app can pair multiple watches at a time. However, all watches must be running watchOS 2.2, which is only available through the developer seed.
When it comes to consumers, I can’t see how this is handy. Unless you’re buying an Apple Watch for the kids (which is a bit silly), why would anyone have two? More to the point, what prompted this feature?
It could be a forward-facing addition, though. Over time, I can see some using an older Apple Watch for little more than proper fitness tracking during workouts. So long as HealthKit can cobble together data (and it does a decent job with my Apple Watch/iPhone, so Ic an’t see why it wouldn’t be able to handle multiple watches), it may work out just fine.
We can also speculate Apple is working on more hardware for its AppleWatch lineup — maybe a proper fitness wearable. A new report from Buzzfeed suggests Apple has a wearable in the works, which is meant to be used as a dedicated medical device.
To that, pairing “multiple watches” may instead be pairing two ‘Apple-made wearables.’