Apple macOS 10.12.4 beta 5 is now available for download. The latest beta Build 16E183b is currently available on Apple’s developer portal.
There is no official change log yet, however, we can expect bug fixes and other under the hood improvements with the latest beta. Previously released beta brings many new features like Night Shift to the Mac.
According to Apple,
Night Shift adjusts the color of your display after sunset. Many studies show that exposure to bright-blue light in the evening can affect your circadian rhythms and make it harder to fall asleep. After sunset, Night Shift will shift your display colors to the warmer end of the spectrum, making the display easier on your eyes. In the morning, your display returns to its regular settings.