macOS 27 brings UI refinements to fix Liquid Glass complaints, revamped Siri at WWDC 2026

Apple Addresses Tahoe Design Complaints with macOS 27 UI Refinements

Apple is preparing to roll out macOS 27 with targeted UI refinements aimed at addressing criticism of the Liquid Glass design language introduced in last year's Tahoe release, according to Bloomberg's Mark Gurman. The update will feature tweaks to transparency and shadows across the system, tackling Liquid Glass readability issues that have frustrated users since the design debuted 1

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. Gurman reports that the Tahoe incarnation was "somewhat unfinished," with the macOS 27 follow-up delivering the design as Apple's team originally intended. The changes stem not from design problems, but rather from an incomplete implementation by Apple's software engineering team 1

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Liquid Glass Gets a Second Chance at WWDC 2026

The "slight redesign" will specifically target the shadows and transparency quirks that have plagued readability on Mac 2

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. Users who struggled with poor contrast in Tahoe apps or sidebar transparency may find relief in the refinements, though those fundamentally opposed to Liquid Glass likely won't be swayed. The update promises better text visibility, improved scroll bar placement, and reduced shadow effects taking over the screen 2

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. Beyond visual polish, Apple will use macOS 27 as an opportunity to deliver software reliability and efficiency improvements, with code cleanup serving as a theme across this year's operating system versions 1

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Gemini-Infused Siri and AI-Powered Automatic Tab Grouping

The revamped Siri will headline macOS 27's feature additions, bringing agentic capabilities powered by upgrades to Apple's artificial intelligence platform 1

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. Safari will receive a new "Organize Tabs" button that leverages artificial intelligence for automatic tab grouping, removing the manual process of organizing browser tabs while letting users choose whether grouping occurs automatically 2

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. This feature brings Safari in line with competing browsers that have offered similar functionality.

Touchscreen MacBook Ultra Preparation and Snow Leopard Moment Hopes

With rumors pointing to a touchscreen MacBook Ultra launching later this year, macOS 27 may include touch-ready optimizations hidden from public betas until the device reportedly breaks cover toward the end of 2026 or early 2027 2

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. The update represents a potential Snow Leopard moment for Apple, focusing on under-the-hood stability rather than feature bloat. With this being a make-or-break year for Apple's AI ambitions, the combination of design refinements, intelligent features, and performance improvements could define whether macOS 27 becomes a beloved release that prioritizes polish over novelty.