Apple Seeds Second macOS Sierra 10.12.4 Beta to DevelopersApple today seeded the second beta of an upcoming
macOS Sierra 10.12.4 update to developers, two weeks after seeding the
first macOS Sierra 10.12.4 beta and just over a two weeks after releasing
macOS Sierra 10.12.3.
The second macOS Sierra 10.12.4 beta is available for download through the Apple Developer Center or the software update mechanism in the
Mac App Store for those who have previously installed a beta.
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macOS Sierra 10.12.4 brings iOS's
Night Shift mode to the Mac for the first time. First introduced with iOS 9.3, Night Shift is designed to gradually shift the display of a device from blue to yellow, cutting down on exposure to blue light. Blue light is said to disrupt the circadian rhythm and is believed to interrupt sleeping patterns.
Night Shift can be activated through the
Displays section of System Preferences, where a setting to have it come on at sunset and turn off at sunrise is available. Night Shift can also be toggled on manually through the Notification Center or via
Siri.
<center><iframe width="560" height="315" src="
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<center>Subscribe to the MacRumors YouTube channel for more videos.</center>The 10.12.4 update focuses mainly on Night Shift, but also includes dictation support for Shanghainese, cricket scores for Siri, and improved PDFKit APIs. Today's beta adds an opt-in option for
iCloud Analytics that pops up after installing the update.
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macOS Sierra </div>
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Apple Seeds Second macOS Sierra 10.12.4 Beta to Developers
