Apple adjusts macOS 27 design with reduced Liquid Glass transparency in first developer beta
The first beta of macOS 27 introduces a new transparency slider and refined window aesthetics, though Siri AI features remain on a waitlist and performance gains are yet to be fully verified.
Apple has released the initial developer beta for macOS 27, codenamed Golden Gate, following its announcement at the Worldwide Developers Conference. The update marks a significant pivot in the operating system’s visual direction, introducing substantial refinements to the Liquid Glass user interface to mitigate the excessive transparency that characterised earlier previews.
A new slider within the appearance settings now allows users to adjust the level of UI transparency. The build defaults to a frosted aesthetic rather than the fully transparent design seen in previous iterations, a shift that appears to respond to early reviewer feedback regarding visual distraction. While users cannot select a fully opaque mode, the new default setting provides a middle ground that reduces glare without resorting to the harsh grey and black backgrounds associated with the legacy Reduce Transparency accessibility option.
Beyond the transparency adjustments, the update restores edge-to-edge sidebars featuring colourful icons and increases the corner radii across windowed applications. These changes represent a return to more familiar spatial layouts and a correction to the mismatched corners observed in earlier builds. However, the interface is not without minor friction points; the new battery icon, adopted from iOS, has been noted for reduced legibility, and window tiling controls remain less refined than those found in competing operating systems such as Windows 11.
Performance claims regarding faster search indexing and improved efficiency are included in the release notes, though early testing on the MacBook Neo hardware has yielded mixed results. Initial comparisons with the previous macOS 26 Tahoe beta indicate that Golden Gate opens applications such as Lightroom Classic and Slack more quickly, while lagging behind in the launch times for Photoshop and Steam. Spotlight search performance for local files appears comparable between the two versions, leaving the jury out on whether the underlying efficiency gains will materialise in real-world usage.
Siri AI features are present in the build but are currently restricted to a waitlist, preventing a comprehensive assessment of their integration into Spotlight and other system functions. While Apple positions these AI capabilities as a major upgrade, early impressions suggest that their impact may be incremental rather than transformative. As Apple continues to refine the operating system through subsequent beta releases, the focus will remain on balancing the new visual language with functional stability and AI performance.
