It's been many years since the Mac App Store has been given some love, so it's fair to say this design overhaul is long overdue.
According to Steve Troughton-Smith tweet, these screenshots are based on a video of Xcode 10 preview, which shows off the new setting.
It would be nice to see a dark mode on every desktop OS out there, so Apple adding this dark mode option in their macOS is a nice addition that some people will like. In addition, you can run custom Automator Actions on files directly from Finder with Quick Actions. The Mac App Store will also gain new video previews as well as a more prominent ratings and reviews section.
The desktop is getting stacks which organises files in groups via type. This can clear the clutter of files on the desktop by a single click, including by time, date or tags. Unlike a folder, files in Stacks are directly accessible and you can scrub through them. It is now possible to get a dark Menu bar and Dock in macOS High Sierra, but macOS Mojave extends the darker colors to all system apps and the overall UI.
Dark Mode can also be configured to activate (and switch off) at certain times of the day.
Redesigned Mac App Store with focus on curation, along with dedicated tabs for Discover, Create, Work, Play, and Develop.
Making the Screenshot tool easier to use and feature-rich, Apple also brought new features to this tool as well.
Among the most intriguing updates in Mojave is the inclusion of additional privacy and security measures in Safari, where Intelligent Tracking Prevention will help to block social media "Like" or "Share" buttons and comment widgets from tracking users without permission. Basically, it won't make you appear as a distinct user on the web. The next macOS will be called macOS Mojave. To that end, Safari users will see a new warning about websites that are tracking you when you may not be aware that they're tracking you. Persistent AR will also change the way consumers interact with AR apps by creating opportunities to leave virtual objects in the real world to which users can return.
Other new features on macOS Mojave includes new on-screen screenshots controls and new video recording capabilities, Continuity Camera that shows documents or pictures taken with their iOS devices instantly on their Mac, and integrated markup tools into Finder, Quick Look and Screenshots.