Apple has released developer beta 1 for macOS Mojave 10.14.1 Tuesday night just one day after the first public Mojave release was released. The release notes for the beta version of developers are pretty small, so for now it looks like an update for a bug fix.
First macOS Mojave10.14.1 developer beta available for download
Apple introduced macOS Mojave during its annual Worldwide Developer Conference in early June. The new Mac operating system update includes Stacks Desktop file organization, Quick Actions in Finder windows, improved screenshot and recording with built-in layout and editing, system-wide dark mode for apps, continuity for grabbing and editing photos that you have on your iPhone cuts, and more.
You must be registered in Apple's developer program to get this beta. You can log in to the Apple website.
If you are already using the Mojave developer beta, go to System Preferences gt; Software update to find and install the new update.