Apple has released the final version of the latest macOS 10.12.6 software update. Mac users running macOS Sierra can find the update through the Mac App Store.
macOS 10.12.6 will likely be the last version of macOS Sierra before Apple ships macOS High Sierra later this fall. macOS 10.13 is currently available in both developer and public beta versions for testing.
macOS High Sierra includes the Apple File System, HEVC support, Metal 2, improvements to Mail, Photos, and Safari, and more.