The new revision of macOS Sierra has just been released by Apple. macOS Sierra 10.12.4 is now available for Mac users, but before you install it, here’s the lowdown on the new features. It’s not a major update, so there’s no need to rush to install it. When you do decide to do so, be sure you back up your Mac’s data first.
The major new feature in macOS Sierra 10.12.4 is Night Shift, which made its debut in iOS 9.3. Night Shift is available on the following Macs:
from Computerworld News http://www.computerworld.com/article/3185215/apple-mac/apple-releases-macos-sierra-10124-heres-whats-new.html#tk.rss_news
from Tumblr http://2375823.tumblr.com/post/158900087633