After just two days in developer’s hands, Apple has made the betas for iOS 10.3 and macOS 10.12.4 Sierra available for all registered in the public testing program.
Source: APPLE INSIDER
Apple releases first macOS 10.12.4, iOS 10.3 betas for public testers, with 'find my AirPods,' APFS
ByA Word From Our Sponsor
Jan 26, 2017