Enlarge / The $1,499 MacBook Pro running macOS Sierra.
Apple has just released macOS 10.12.4, the fourth major update for Sierra since the operating system was released last September.
In addition to the typical bug fixes and security patches, the update brings over one minor feature from iOS: Night Shift, which can subtly change your screen’s color from a cooler blue tone to warmer yellow tones in an effort to help you sleep better.
Night Shift was originally introduced in iOS 9.3 about a year ago.
Since then, Google has added a similar feature to Android 7.0, and Microsoft is going to include a version of it in the imminent Windows 10 Creators Update. On Android, Windows, and macOS, the feature is arguably less necessary, since third-party apps like f.lux can fill the gap.
Still, it’s convenient to have it integrated into the OS itself and officially supported by the companies, if only because it will prevent the feature from breaking when new updates come out.
The complete list of fixes, including business-specific updates, is below.

For security update information, keep an eye on this page.
Read on Ars Technica

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