Apple released the first developer release of macOS Sierra 10.12.6 on Tuesday, just one day after shipping macOS Sierra 10.12.5. The company didn’t announce any new features in the release, and it’s likely to be another maintenance release ahead of Apple’s World Wide Developer Conference in June.
Users signed up with Apple’s developer program will find the update in the Apple Developer Connection. Those accounts will also find the update in the Mac App Store.