Apple today seeded the second beta of an upcoming macOS Mojave 10.14.4 update to its public beta testing group, one day after seeding the second beta to developers and a week after releasing the first macOS Mojave 10.14.4 public beta.
The macOS Mojave update can be downloaded using the Software Update mechanism in the Mac App Store after downloading the appropriate profile from Apple's beta testing website. Apple's beta testing site gives users access to iOS, macOS, and tvOS betas.

macOS Mojave 10.14.4, along with iOS 12.2, introduces support for Apple News in Canada for the first time, allowing Canadian users to read the news in French or English.
The update also includes support for Touch ID-enabled Safari AutoFill and automatic Dark Mode themes in Safari. That means if you have Dark Mode enabled on macOS Mojave, when you visit a website with a dark theme, it will be activated automatically. You can see a demo of the feature here.
macOS Mojave 10.14.4 will likely be in beta testing for the next several weeks as Apple refines features and works out bugs. After that, it will see a release alongside iOS 12.2, watchOS 5.2, and tvOS 12.2.





















Top Rated Comments
So they do pay attention to the feedback!
* its BAD on non-retina displays
* its a regression on retina / high res displays
(the answer isn't buy a new computer unless you're offering to pay)
Check your own 10.14.3 system for the build number. The build number will appear after clicking on the version number in About this Mac. Newest build number for 10.14.3 is 18D109. I think if you have that build, then the beta won't install. Next beta release should fix that.