Context
Google announced Gemini 3 as the default model for AI Overviews globally and enabled mobile users worldwide to continue an AI Overview with a contextual follow-up conversation in AI Mode.
What changed
AI Overviews switched to a new default model and added a direct transition from an initial AI Overview to an ongoing AI Mode conversation on mobile.
Why it matters
Source discovery can unfold across multiple conversational turns instead of ending at the initial overview, changing how publishers should observe and measure answer exposure.
Visibility OS interpretation
Visibility OS interpretation: first-turn AI Overview exposure and later AI Mode source exposure are analytically different; this official announcement does not imply a ranking or citation boost.
What remains uncertain
How do citations, linked-source visibility and click-through vary between initial AI Overviews and follow-up AI Mode turns? No publisher-level outcome data was supplied.