Update: iOS 27.3 beta 1 adds more Siri AI actions and languages, vertical tabs in Safari and StandBy features for every iPhone
Beyond the returning Health app, the first beta packs much more: Siri AI handles more tasks in Mail and Safari and expands to Traditional Chinese, Vietnamese, Turkish and Norwegian. Safari gets a vertical tabs option and adaptive dark mode, and the iPhone Duo gains Reachability on its outer display. Also arriving are Selfie Sing in Apple Music and gym strength plans in Fitness+.