Apple launches beta 2 of iOS 10.2.1 and macOS Sierra 10.12.3
Apple on Tuesday seeded to members of the Apple Developer Program a second beta of iOS 10.2 and a second beta of what would become the third major update to macOS Sierra. iOS 10.2.1 beta 2 (build 14D15) and macOS Sierra 10.12.3 beta 2 (build 16D17a) are now available to install over-the-air via Settings → General → Software Update on iOS devices and under the Mac App Store’s Updates tab on the Mac.