macOS Sierra - Technical Specifications at Apple Support ().

↑ Apple previews major update with macOS Sierra, Apple Inc.

However, APFS was not made available to the public until macOS 10.13 in 2017. The Developer Beta also included a pre-release version of the Apple File System (APFS) to replace HFS+. macOS Sierra was officially released on September 20, 2016, as a free upgrade through the Mac App Store. The first public beta was made available in July 2016. The first beta of macOS Sierra was seeded to developers shortly after the keynote address of the 2016 Worldwide Developers Conference on June 13.

Safari-style Tabs, where tabs are now a UI feature inherited by Cocoa applications, not just Safari, Terminal and the Finder.Optimized Storage, where old items can be moved off-disk onto iCloud storage.Apple Music is fully rebranded and has a new interface.Messages gets a major refresh and now allows users to integrate rich media into one's texts.Picture-in-Picture support for Safari and iTunes, which allows users to watch videos while working in other applications.

Apple Pay Integration, where linked devices with Apple Pay can be used to pay via Safari.Photos now contains local intelligent systems processing to find relationships between photos and makes them available via search or browsing.Desktop and Documents Sync, syncing the desktop and documents folders via the cloud so the same desktop is available everywhere.Universal Clipboard shared between devices using the same Apple ID.Auto Unlock via paired devices such as an Apple Watch.Siri integration, including drag-and-drop.

127.0.0.1 mac os 10.12