Apple has rolled out the initial beta versions of iOS 27.3, iPadOS 27.3, and macOS 27.3 to developers. These updates bring several changes to the Safari web browser, focusing on user interface and functionality enhancements.
Safari now offers a new Vertical Tabs design option across iOS 27.3, iPadOS 27.3, and macOS 27.3. This layout arranges tabs vertically on the left side of the browser window, differing from the traditional top-aligned tabs. By default, vertical tabs appear as icons to conserve screen space, with an option to resize the tab bar to display website titles. Users can enable this feature through the Settings app on iOS/iPadOS or the "View" menu in Safari on Mac.
The vertical tab layout has gained traction in other browsers, notably Arc, which ceased development last year and will be discontinued in December.
The new updates include Adaptive Dark Mode, which automatically applies a dark theme to websites that do not natively support Dark Mode. When Dark Mode is active on a device and a user visits an unsupported website, a "Try" button appears, allowing Safari to generate a dark-themed version of the site. This feature can be configured for automatic activation or on a per-site basis.
Siri AI in iOS 27.3, iPadOS 27.3, and macOS 27.3 now supports direct actions on Safari tabs. Users can instruct Siri to move, sort, organize, and close tabs. Future updates are expected to expand Siri's on-screen awareness to encompass the entire content of a webpage, beyond what is currently visible.
These beta versions are currently available for developer testing. The public release of iOS 27.3, iPadOS 27.3, and macOS 27.3 is anticipated to occur in December.
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Apple released the first betas of iOS 27.3, iPadOS 27.3, and macOS 27.3, introducing new Safari features. These updates include a vertical tab layout option, Adaptive Dark Mode for unsupported websites, and expanded Siri AI capabilities for tab management.