Apple today released the iOS 8.2 beta 4 for developers.
In addition to the traditional bugfixes and improvements as a whole, the 12D5461b build also brought greater support to the Apple Watch. Now in Bluetooth settings there is a specific area for iPhones to be properly connected (paired) with the Apple watch. The information on this panel also indicates that the company will soon launch a dedicated app to manage the watch (download apps, for example) from iPhones.
The update is available both by itself iGadget (OTA, over-the-air; in General Software Update Settings) and the Apple developer portal.
Along with iOS 8.2 beta 4, Apple also released the Xcode 6.2 beta 4 with WatchKit (build 6C107a), which adds support for the latest versions of the SDK (software development kit, or software development kit) for iOS (8.2 beta 4) and OS X (10.10).
Rumors indicate that the Apple Watch will be launched at the end of March, so these tests (from iOS and this future app, which has not yet been released) have everything to intensify.