Apple's Worldwide Developers Conference (WWDC) 2026 keynote is scheduled for Monday, June 8 at 10:00 a.m. Pacific Time, with the conference running through June 12. The event is widely expected to center on a long-delayed overhaul of Siri, Apple's voice assistant, alongside iOS 27, iPadOS 27, macOS 27, watchOS 27, tvOS 27, and visionOS 27.
Extensions framework opens Siri to third-party models
According to reporting by Bloomberg's Mark Gurman, verified against internal iOS 27 test builds by 9to5Mac and MacRumors, <cite index="4-10">Apple is opening Siri to Claude, Gemini, and other third-party AI through a new Extensions system in iOS 27, iPadOS 27, and macOS 27, first reported by Bloomberg on March 26, 2026 and verified inside iOS 27 test builds on May 5, 2026 by 9to5Mac and MacRumors.</cite> <cite index="5-12,5-13">Users can choose any AI provider that adds support for Apple's new iOS 27, iPadOS 27, and macOS 27 "Extensions" feature. A message shown in test versions of the software reads: "Extensions allow you to access generative AI capabilities from installed apps on demand, through Apple Intelligence features such as Siri, Writing Tools, Image Playground and more."</cite>
The shift ends the bilateral arrangement struck in 2024. <cite index="5-10,5-11">Apple has already partnered with OpenAI to make ChatGPT available in lieu of Apple's built-in options for Siri, Writing Tools, and Image Playground on iOS 26, but in Apple's upcoming software updates, other third-party chatbots like Claude and Gemini will also be available. Instead of being limited to ChatGPT, users will select their preferred AI service.</cite>
Gemini-based foundation model
Separately from the Extensions layer, Apple's own rebuilt Siri is reported to run on a custom Large Language Model (LLM) derived from Google's Gemini. <cite index="2-4">A joint statement posted by Google on January 12, 2026, says the next generation of Apple Foundation Models will be based on Google's Gemini models and cloud technology, and CNBC reported the companies will run models on Apple devices and Apple's private cloud compute.</cite> <cite index="1-14">Google Cloud CEO Thomas Kurian publicly reaffirmed the partnership at Google Cloud Next '26, saying Apple and Google are "collaborating as Apple's preferred cloud provider to develop the next generation of Apple Foundation Models based on Gemini technology."</cite>
Interface and privacy changes
<cite index="16-30">Siri is getting its own app with a chatbot-style interface, an LLM-powered intelligence overhaul, and modern features for the AI era.</cite> <cite index="9-16,9-17">Gurman said iOS 27 will include a new Siri interface in the Dynamic Island. When triggered, the Dynamic Island will show a "Search or Ask" prompt accompanied by a "glowing cursor."</cite> Apple is also expected to introduce conversation retention controls, with <cite index="8-12">users able to choose how long Siri keeps their conversations — 30 days, a year, or indefinitely.</cite> <cite index="5-14,5-15">Apple also plans to let users choose voices from third-party AI services for Siri, which would make it clearer whether Siri or another AI product like Gemini is responding. Siri would use one voice, while responses from third-party AI options would use another voice.</cite>
Context: lawsuit and delayed roadmap
The announcement comes against a backdrop of legal and reputational pressure. <cite index="1-7,1-8">Apple first demonstrated the next-generation Siri features at WWDC 2024 and promoted them in advertising when the iPhone 16 launched in September 2024. It delayed those features in March 2025. iOS 27, expected to ship in September 2026 with a developer beta available on June 8, is now the scheduled delivery vehicle.</cite> <cite index="11-9">Apple will pay $250 million to settle a class action lawsuit accusing it of false advertising and unfair competition after the personalized Siri features it promoted when launching the iPhone 16 were delayed.</cite>
<cite index="9-3">Beyond Siri, iOS 27 is expected to be a relatively lean update, described as a "Snow Leopard" year, focused on performance improvements, bug fixes, and code cleanup rather than major new feature additions.</cite> Apple has not officially confirmed the Extensions framework; full details are expected at the keynote.