Apple Seeds Fifth macOS Sierra 10.12.1 Beta to Developers and Public Beta Testers
Apple today seeded the fifth beta of an upcoming macOS Sierra update to developers and public beta testers, just over one week after seeding the fourth beta and a month after releasing the new macOS Sierra operating system to the public.
macOS Sierra 10.12.1 beta 5 can be downloaded from the Apple Developer Center or through the Software update mechanism in the Mac App Store for those who already have an earlier 10.12.1 beta installed.

macOS Sierra 10.12.1 appears to focus on bug fixes and under-the-hood performance improvements to address issues that have been found since the operating system’s release, and it’s also likely adding features designed for next-generation MacBook Pro models set to be released later this year.
Few outward-facing changes were discovered in the first four betas, but it 10.12.1 does include Photos support for the new iPhone 7 Plus Portrait feature introduced with iOS 10.1. New features discovered in the fifth 10.12.1 beta will be listed below.
macOS Sierra is a significant update that brings features like Siri support, a new storage optimization option, cross device copy paste, auto unlocking with the Apple Watch, and more. For full details on macOS Sierra, make sure to check out our roundup.
Popular Stories
During WWDC 2025, Apple revealed that macOS 26 Tahoe would be the final major macOS version for Intel-based Macs.
macOS 27 will be compatible with Apple silicon Macs only, meaning that you will need a Mac with an M-series chip or a MacBook Neo with an A18 Pro chip in order to install the software update. Apple will unveil macOS 27 during its WWDC 2026 keynote this Monday, June 8, and the...
On an earnings call in late April, Apple's CEO Tim Cook said that customer response to the MacBook Neo was "off the charts," and the popularity of the laptop has reportedly led the company to significantly boost production.
Apple supply chain analyst Ming-Chi Kuo this week said he believes that MacBook Neo shipments to Apple were doubled from an initial target of 5 million units to 10...
Update: Since publication, new information has come to light suggesting the images have been AI-manipulated and are not in fact iPhone 18 Pro chassis parts. The original article follows.
The color options Apple is reportedly planning for the upcoming iPhone 18 Pro and iPhone 18 Pro Max have appeared online today in the form of images of chassis parts of unknown authenticity....