As tweeted by Mike Stern, Apple’s Platform Experience and Design Evangelism Manager, Apple has updated its AppKit design resources with a comprehensive set of UI elements for making Mac apps. The UI elements come in both Aqua and the Dark Aqua variants for designing Dark Mode Mac apps.
https://twitter.com/themikestern/status/1022502042852454401
The update, also announced on Apple’s developer news website, includes new watchOS UI elements too, including ‘dozens of new UI elements for watchOS apps, watch face templates for designing complications, a color guide, and new text styles.’
The design assets are available to download in both Photoshop and Sketch formats from the Resources section of Apple’s Human Interface Guidelines website. A full list of all the changes is available here.