iOS 8.2 adds support for WatchKit, the developer SDK for the Apple Watch. Developers can make Glances, Notifications and WatchKit apps with the new SDK. Apple tested 3 for 3 weeks then released the Beta 4.
You can install iOS 8.2 beta 4 in these compatible devices iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air 2, iPad mini 3, iPad 2, iPad (third-generation), iPad (fourth-generation), iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3 and iPod touch (fifth-generation).
You can also install iOS 8.2 beta 4 on your iPhone,iPad,iPod now by registering your device udid to Apple Developer Account. Go here to Register your iPhone iPad iPod UDID to Apple Developer Program – www.udidregs.com and after you are registered to the apple developer account then go ahead and download the iOS beta file and install it on your device. You can follow this link for instructions help.
The beta release is available as an Over-the-air (OTA) update on devices running iOS 8.2 beta 3, and will soon be available on the Dev Center as well. We will also upload the direct download links of iOS 8 beta 4 to our download section.
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