Why Apple built a third-party AI system for Siri and then refused to show it at WWDC

At WWDC 2026, Apple announced a new Siri AI and overhauled Apple Intelligence initiatives, along with iOS 27 and macOS Golden Gate. However, the iOS 27 developer beta includes an Extensions framework for third-party AI systems like ChatGPT, Claude, and Gemini in Siri, which was not mentioned in the keynote. Additionally, Apple reportedly modified the audio of the WWDC keynote to prevent Siri activations when the assistant's name was spoken.