Sounds like things are moving forward on a possible Gemini-powered Siri. Mark Gurman reports on an agreement between Google and Apple for testing, and a bunch more about Apple’s plans and new Siri architecture:

"Apple is rebuilding Siri around three core components: a planner, the search systems for the web and devices, and a summarizer. The planner interprets voice or text input and decides how to respond; the search system scans the web or user data; and the summarizer pulls it all together into an answer." https://www.bloomberg.com/news/articles/2025-09-03/apple-plans-ai-search-engine-for-siri-to-rival-openai-google-siri-talks-advance