Steven Tweedie
iOS 8.2 is what you'll need to pair your iPhone to the Apple Watch when it ships on April 24.
It's available on the iPhone 5 and later.
There are a lot of non-Apple Watch improvements to iOS in 8.2 as well.
You can now add and visualize workout data from third-party apps in the heath app.
There are a flurry of stability enhancements and bug fixes, too.
Mail, Music, and Maps all got a performance boost in iOS 8.2.
Apple also fixed a bug that prevented some iTunes playlists and music from syncing in the music app.
To get iOS 8.2, head to Settings > General > Software Update > Download and Install.