Pre-WWDC leaks for iOS 27 describe a new Extensions system that lets Siri route queries to Claude, Gemini, and other third-party AI models. The feature reportedly ships at WWDC 2026 on June 8 alongside iPadOS 27 and macOS 27. The same leak set also describes system-wide AI search (a Spotlight replacement), Visual Intelligence improvements for the camera, and a Safari tab organizer.
The technical detail most coverage will overlook is the routing layer. Extensions imply that Siri performs initial intent classification on-device, then dispatches the query to the model best matched to the intent type. Apple's own model handles personal context, while Claude or Gemini take reasoning-heavy queries. The classification layer is what determines whether this becomes a privacy story (queries that should stay local going to cloud models anyway) or a real architectural improvement (right-model-for-right-task with informed user controls). Apple has historically been careful about disclosing inference paths, which suggests the classification layer will get a clean public-facing explanation at WWDC. The strategic implication for the LLM access market is larger than the iOS feature itself. If Apple ships a UI affordance that asks users to pick their default reasoning model (or selects one automatically), Apple becomes a major distribution channel for Claude and Gemini equivalent in scale to Microsoft Copilot for Windows. The model labs negotiating those distribution terms with Apple are in a stronger position than they were a year ago, when Apple Intelligence was a closed Apple-models-only product.
For AI lab business teams: the iOS Extensions distribution channel is the access lever to watch through Q3. For app developers integrating with AI: assume Siri Extensions become a fourth deployment surface after web, mobile-native, and desktop. For users: the privacy story depends entirely on how the on-device classification layer routes queries; reserve judgment until WWDC.