As well as releasing the new iOS 10.3 Beta 4, Apple also released a new beta of their desktop software in the form of macOS Sierra 10.12.4 Beta 4.
The new macOS Sierra 10.12.4 Beta 4 brings a range of new features to the mac, these include Night Shift mode and more.
As this is the fourth beta of macOS Sierra 10.12.4 it should not be too long before the software is released to everyone.
We suspect that Apple will release the new macOS Sierra 10.12.4 software update some time next month, as soon as we get some details on the release date, we will let you guys know.
Source 9 to 5 Mac