Apple's Craig Federighi debuted the operating system update, getting straight to the good stuff, with features like Dark Mode confirmed following previous rumors.
Another feature known as Stacks was demonstrated, a new method for gathering collections of files or apps within single, clickable icons. For instance, photos can be gathered in a single stack on the desktop rather than littered throughout that home screen.
Other quality-of-life features were announced such as Quick Look, a new way to interact with files more deeply, but without actually launching an associated app. This allows you to play with rich media files in a lightweight way. Screenshots are also improved, bringing video capture to the tool.
Apple has also expanded upon its cross-device workspace tool, Continuity, with a Camera addition, allowing for instantaneous pasting of photos taken with the iPhone to the connected macOS Mojave desktop. This feature also works for scanning documents.