Earlier this week, Apple released the fourth beta of macOS Mojave to developers, and the third beta to public beta testers. Unlike beta three, there were actually quite a few changes in this update, including a new dynamic desktop wallpaper.
Anyone who used Dark Mode in the first three betas are fully aware that dynamic wallpaper didn't completely work. It supported Light Mode, but not Dark. Dynamic backgrounds now work in the latest betas, changing their appearance throughout the day based on location.
Dynamic desktops have now been split into their own section within the Desktop and Screensaver panel of System Preferences.
There is also a new dynamic background, called Solar Gradient. It switches from a bright orange to a deep blue throughout the day and night.
Since macOS Mojave contains a new interface for taking screenshots, there was no need for the aging Grab utility. It has been removed in the latest beta and replaced with an "app" called Screenshot that launches the new screen capture hub overlay.
We noticed that the RAM allocation issues found in previous betas seem to have been resolved. This has led to an overall speedier experience. Specifically, in the first three betas it could take up to six hours for a longer video to export. After installing beta four, the same video can take maybe 20-30 minutes. A huge improvement.
- New "Dynamic" section of backgrounds
- Dynamic background now works in Dark Mode
- New Solar Gradient dynamic background
- Grab utility has been removed
- New Screenshot "app" that launches new screen capture hub
- Support for latest 2018 MacBook Pros
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