Apple today provided developers with the fifth beta of macOS Golden Gate, two weeks after the fourth beta. Download via System Settings > General > Software Update; enable Beta Updates and have a free developer account.

Design improvements include refined Liquid Glass opacity with a transparency slider, enhanced shadowing for active window detection, uniform toolbars, edge‑to‑edge sidebars, reduced rounded corners, and fewer menu bar icons.

Siri AI now offers chatbot‑style assistance with world knowledge, personal data, and onscreen awareness, accessible via Spotlight's new Search or Ask interface, a dedicated Siri app, custom voice settings, Visual Intelligence for screen queries, and Write with Siri for text generation.

AI features extend to Photos (photo editing), Safari (tab organization), Passwords (auto‑update weak passwords), and a revamped Image Playground that creates photorealistic images. More details in the macOS Golden Gate roundup. The update continues Apple's push to integrate AI across macOS, building on iOS 27 and iPadOS 27 features. Developers can sign up on Apple's beta website to test the software before public release. The fifth beta reflects Apple's ongoing effort to refine UI design and AI integration before the final release.