WWDC 2026: The Siri Reset That Will Define Tim Cook's Legacy

WWDC 2026, running June 8–12, will be remembered as the inflection point where Apple staked its claim on modern AI under the shadow of a leadership transition. Tim Cook takes the stage at Apple Park for his final keynote as CEO, with his successor, John Ternus, set to take over on September 1 . The marquee announcement is a fully reimagined Siri, a project so critical it represents the core of Apple's AI strategy reset following a 2025 internal reckoning.

The historic context: Cook's final curtain

Cook has opened every WWDC keynote since 2012, and this year carries the weight of his 15-year tenure. Apple confirmed in April that Cook will step into an executive chairman role, handing the CEO reins to John Ternus, the senior vice president of Hardware Engineering and the architect behind Apple Silicon . Under Cook’s leadership, Apple’s market capitalization has grown to over $4.5 trillion . The timing is intentional: Cook presents the software vision on June 8, and Ternus will ship it in the fall .

The AI reset: what's driving the overhaul

Apple's 2024 push into AI was not the seamless debut the company hoped for. A strategic course correction began in early 2025, culminating in a multi-year, billion-dollar partnership with Google announced in January 2026 to license a custom Gemini model as the engine for Apple Foundation Models . The conference tagline, “Coming Bright Up,” is reported to tease the glowing Dynamic Island interface for the new Siri .

Siri 2.0: the real centerpiece

Extensive pre-event reporting from Bloomberg, 9to5Mac, and others points to a radical Siri rebuild that transforms a basic voice command parser into a full chatbot .

A dedicated Siri app with a chatbot interface

Siri is expected to exist as a standalone app featuring an iMessage-style dark interface with persistent conversation bubbles and chat history synced across devices via iCloud . Users will be able to toggle between voice and text, and a paperclip icon will allow for file and image attachments .

Multi-step commands and screen awareness

The new Siri is reportedly capable of chaining up to 10 sequential actions across and within apps from a single prompt and can maintain conversational memory for 50 turns . It is also expected to understand what is on a user’s screen, enabling actions like sending a photo without manually identifying a specific file .

A privacy-first architecture

Apple's approach divides the labor: simple requests run on the device's Neural Engine, while complex reasoning and natural language understanding are routed to Apple's Private Cloud Compute, which runs the custom Gemini model .

Third-party extensibility

Siri will be opened to third-party AI chatbots like ChatGPT, Claude, and Gemini through an "Extensions" system in Settings . Developers will receive APIs to expose their own apps’ capabilities directly to the new assistant .

iOS 27 and macOS 27: more stability than spectacle

Software updates will be previewed for all major platforms, but the focus is on refinement.

iOS 27: a "Snow Leopard"-type release

Described as a "deep clean" rather than a visual redesign, iOS 27 prioritizes performance and stability . It will drop support for the iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, and iPhone SE (2nd generation) . Other expected refinements include revamped AirPods settings, Genmoji enhancements, and Google Cast support .

macOS 27 "Mammoth" and beyond

The new macOS is expected to bring the full Siri overhaul and Apple Intelligence 2.0 to the Mac, alongside a refined "Liquid Glass 2" design language . This update will also mark the end of official support for Intel-based Macs .

Health+: the announcement that won't happen

Contrary to earlier rumors of a marquee AI health subscription, the project code-named "Mulberry" was reportedly scaled back in February 2026 following a leadership shakeup in Apple's health organization . A full standalone Health+ premium service is not expected. Instead, Apple plans to roll out individual AI health features—such as enhanced nutrition tracking and personalized wellness insights—directly into the existing Health app over time .

The bottom line

This WWDC is Apple's AI redemption moment, with the company betting its post-Cook future on a Siri that can finally compete. The narrative is as much about leadership continuity as it is about technology: Cook must prove Apple is prepared for the AI era as he passes the baton to Ternus .