The Safari browser in Apple’s upcoming iOS 27.3, macOS 27.3, and iPadOS 27.3 developer betas is set to debut vertical tabs, adaptive dark mode, and enriched Siri AI integration, enhancing the browsing experience and cross-device productivity.
- Vertical tabs offer easier navigation and tab reorganization on widescreen devices.
- Adaptive dark mode works on all websites, even those without native dark themes.
- Siri AI integration enables voice-activated multi-step tasks in Safari and other apps.
What happened
Apple released developer betas for iOS 27.3, macOS 27.3, and iPadOS 27.3 that introduce significant updates to Safari. Key additions include vertical tabs, which provide a more efficient way to browse and manage multiple tabs by listing them vertically with drag-and-drop support. Alongside this, adaptive dark mode allows users to enable a dark-themed browsing mode on any website, regardless of its native design.
Furthermore, the new betas expand Siri AI’s role within Safari and system-wide apps such as Music, Messages, Photos, Calendar, Maps, Weather, Shortcuts, and Notes. This integration enables more advanced voice commands that can perform complex, multi-step tasks like scheduling messages, curating playlists, and organizing photos, all designed to boost productivity across Apple devices.
Why it matters
Vertical tabs address a common browser interface challenge by enhancing tab visibility and accessibility, especially on wider screens where horizontal tabs become cramped. This feature aligns Safari with competing browsers, improving user workflow and making tab management more intuitive and efficient.
Adaptive dark mode significantly improves the nighttime browsing experience by applying a sophisticated color inversion process that respects the meaning of webpage colors, reducing eye strain in dark environments. Given that 40% of web page loads come from dark mode users although only 10% of sites natively support it, this feature fills a key gap for many users.
The deeper Siri AI integration reflects Apple’s ongoing strategy to embed intelligent assistance ubiquitously across its ecosystem. By enabling Siri to handle complex app-specific tasks via voice, Apple enhances hands-free productivity, making the devices more proactive and user-friendly.
What to watch next
The new Safari features are expected to debut publicly in mid-December. Users will be watching closely to see whether vertical tabs can be customized beyond the traditional left-side placement, as some users have expressed preference for flexibility in tab positioning.
Attention will also focus on how well adaptive dark mode preserves the integrity and readability of websites that do not natively support dark themes, and whether any visual glitches occur with the new color inversion technique.
Finally, monitoring Siri AI’s adoption and effectiveness in carrying out multi-step voice commands across apps will provide insight into how smoothly Apple is integrating AI-driven productivity tools, and whether these new capabilities will alter user habits or improve workflow significantly.