SEO & GEO News week 50 - AI Mode better links, AI Misinformation & Longer fan-out queries...

This week’s SEO + AI news roundup is packed. Here are the key updates, what they mean, and the sources 👇

🚨 Google December Core Update Rolling Out
Google confirmed a new core update rollout in December 2025, so expect volatility across rankings and visibility.
https://x.com/googlesearchc/status/19...

🧰 Google Launches Managed MCP Servers for Agents
Google added Model Context Protocol support via fully managed MCP servers so AI agents can reliably connect to Google services and enterprise APIs.
https://cloud.google.com/blog/product...

🧠 Why ChatGPT Fan-Out Queries Got Longer
David McSweeney suggests longer fan-out queries use synonym expansion to steer embeddings toward intent and improve retrieval quality.
https://x.com/top5seo/status/19987935...

🧭 Google Web Guide Now Shows in “All” Tab
Barry Schwartz reports Web Guide is expanding from the Web tab into the All tab for Search Labs users, grouping links by topics for exploratory queries.
https://www.seroundtable.com/google-w...

🔗 Google AI Mode Adds More Links + Context Cards
Barry Schwartz covers Google increasing inline links in AI Mode and adding short intros explaining why each link is worth clicking.
https://www.seroundtable.com/google-a...

🧪 AI Misinformation Experiment: Detailed Lies Win
Mateusz Makosiewicz shows how easy it is to manipulate AI answers about a brand, and why official, specific content matters for “narrative control”.
https://ahrefs.com/blog/ai-vs-made-up...

🛒 Google Shopping Bots Too Fast for JS Schema
Barry Schwartz shares that Google’s Shopping crawler often won’t wait for JavaScript-rendered structured data, so shopping schema should be server-side.
https://www.seroundtable.com/google-s...

📊 Search Console Adds Social Channels Traffic
Google is adding reporting for Social Channels traffic in Search Console, giving better visibility into that source alongside search.
https://developers.google.com/search/...

🕷️ OpenAI Updates OAI-SearchBot Crawler Details
Barry Schwartz reports OpenAI changed how it describes OAISearchBot and related agents, including clarifying robots.txt scope and crawl sharing.
https://www.seroundtable.com/openai-c...

🎙️ Dawn Anderson on AI SEO Myths, Chunking, and IR
Gianluca Fiorelli’s interview with Dawn Anderson argues many AI-SEO “new concepts” are hype, while fundamentals like semantics, structure, and intent still win.
https://www.advancedwebranking.com/bl...