The new macOS Mojave 10.14.4 beta can be downloaded through the software update mechanism in System Preferences after the correct profile is installed from the Apple Developer Center.
macOS Mojave 10.14.4 brings Apple News to Canada for the first time, allowing Canadian Mac users to access news stories in French, English or both.
The update also includes Safari AutoFill support using Touch ID and automatic dark mode themes in Safari. That means if you have enabled dark mode when you visit a site that has a dark theme option, it is automatically enabled. You can see a demonstration of the feature here.
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