Illustrative image of Siri AI. Source: Apple Newsroom.

Apple released iOS 27.3 / iPadOS 27.3 Developer Beta 1 to developers on November 3, 2026 (PDT) — around dawn on November 4 Vietnam time. Build 24C5037i (Apple Developer Releases). The same batch also betas macOS, watchOS, tvOS and visionOS 27.3.

Hot spot for Vietnamese users: based on the release notes / beta testing, Siri AI in this version adds Vietnamese, along with Traditional Chinese, Turkish and Norwegian — bringing the total number of Siri AI languages ​​to about 10. These are exactly the four languages ​​Apple promised to have before the end of the year when iOS 27.2 is released.

Siri AI exploits personal context. Source: Apple Newsroom.

Conditions and equipment

Siri AI is still labeled beta. Requires device that supports Apple Intelligence: iPhone 15 Pro / 15 Pro Max, iPhone 16 or later, iPhone Air, iPhone Duo (and corresponding iPad/Mac/Watch/Vision Pro). The machine language and Siri language must be the same — if you want to use Vietnamese, set both to Vietnamese. Not intended for persons under 13 years of age; not yet available on iOS/iPadOS/watchOS in the EU; Mainland China gets some basic Apple Intelligence features this time but does not include Siri AI.

Siri AI conversation interface. Source: Apple Newsroom.

The beta also expands Siri AI actions across many Apple apps (Calendar, Mail, Maps, Messages, Music, Notes, Photos, Safari...) and opens Developer Preview for third-party apps to attach App Intents to Siri AI.

Other notable changes

According to Apple Newsroom: Health redesign returns to beta, supports additional languages ​​including Vietnamese (Insights, Health Age...); Safari adds vertical tabs and Adaptive Dark Mode; Fitness+ has Gym Strength; StandBy is more customizable; Horizontal Reachability on iPhone Duo. The public release of iOS 27.3 is expected around December 2026, the date has not been finalized.

How ​​to install

Developer (free account is fine): Settings → General → Software updates → Beta updates → iOS 27 Developer Beta. Public beta usually follows. Beta is prone to battery/app errors — should not be installed on main device without backup. Source:

Apple Developer – beta

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Apple Developer – Siri AI

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Apple Newsroom – Health

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Apple Newsroom – Siri AI language

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9to5Mac

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MacRumors

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Macworld

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Genk

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