Apple opens Siri AI to all developers in the 27.3 betas

Apple opened a developer preview of Siri AI to all developers with the iOS, iPadOS, macOS and visionOS 27.3 betas, according to Apple Developer news as relayed by Techmeme. Any app can bring its content and actions into Siri AI through App Intents, including multi-step skills.

Reports on the preview say custom integrations run only in development and internal TestFlight builds for now, that App Store submissions are expected in the spring, and that it is not yet available in the EU. Those details come from posts about the announcement, not from Apple's text itself.