Apple opens its annual Worldwide Developers Conference on Monday, June 8, with a long-promised overhaul of Siri expected to take center stage at a keynote that analysts have called one of the company's most consequential in years. The keynote begins at 10 a.m. Pacific time and will stream through the Apple Developer app, Apple's website and its YouTube channel, with the conference running online through June 12.

The headline change is a reworked Siri that Apple says will be more conversational, able to understand context, handle multi-step tasks and act across apps and services. The upgrade leans on a partnership struck in January with Google, drawing on the Gemini team's models to power capabilities that had slipped well past their originally promised timeline.

Reporting ahead of the event points to a standalone Siri app designed to compete directly with chatbots such as ChatGPT and Claude, potentially including conversations that auto-delete after a set period. Apple is also expected to lean into AI "agents," with plans to let users delegate tasks like booking reservations or controlling smart-home devices, in some cases through the App Store.

The software lineup is expected to span iOS 27, iPadOS 27, macOS 27, watchOS 27, tvOS 27 and visionOS 27, with expanded Apple Intelligence features threaded throughout. Among the rumored additions are a Visual Intelligence section in the Camera app that taps Google image search to identify objects, natural-language photo editing, and improvements to Image Playground's generation quality.

In a notable opening of its ecosystem, Apple is expected to let users set third-party AI services as the default for features such as Writing Tools and Image Playground, rather than tying them solely to Apple's own models. Other anticipated tweaks include bill-splitting in Wallet and additional satellite connectivity in Maps.

The stakes are high for a company that has lagged rivals in generative AI and faced criticism after earlier Siri promises were delayed. A polished, reliable assistant could help Apple reassure developers and customers that it can compete at the frontier, while another stumble would intensify doubts about its AI strategy.