Apple today started testing iOS 27.3, the biggest update to iOS 27 since it launched in September. iOS 27.3 includes some features Apple showed off earlier this year, and it adds all-new capabilities.

Safari

Safari has a Vertical Tabs layout option that can be activated in Safari settings, along with an Adaptive Dark Mode for websites that don't have a dark mode design option.

Siri AI

‌Siri‌ AI can do more in and across apps, with Apple adding a long list of new actions.

In Mail, ‌Siri‌ can unsubscribe you from mailing lists and undo recently sent messages. In Weather, ‌Siri‌ can add locations to your weather list, or control weather notifications. In Safari, ‌Siri‌ can clear browsing history, manage tabs and windows, save articles to a Reading List, and close duplicate tabs.…