macOS 27, known as Golden Gate, introduces a significant enhancement to iPhone Mirroring by allowing users to adjust the window’s aspect ratio beyond the iPhone’s fixed dimensions. Previously constrained to the iPhone’s native aspect ratio, users can now choose from several fixed aspect ratios, enhancing flexibility for those who rely on this feature. The update, announced during Apple’s Platforms State of the Union, supports iOS 27-compatible apps, primarily native iOS apps at present. Additionally, macOS 27 integrates Control Center into iPhone Mirroring, complementing other accessible areas like the Home Screen and Spotlight. This change is part of Apple’s broader strategy encouraging developers to design apps for a dynamic range of sizes and aspect ratios rather than fixed orientations. This initiative aligns with speculation about a forthcoming foldable iPhone, potentially named “iPhone Ultra,” expected to debut alongside the iPhone 18 Pro in September 2026. The presence of frameworks like “foldState” and “angleDegrees” in iOS 27 further suggests preparations for foldable hardware, hinting at a future with devices featuring multiple integrated screens.

