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+> **🚨 IMPORTANT**: The Dev Days content has moved! Looking for the new Dev Days page? [Go to the dev-days repo](https://gh.io/dev-days/repo).
+
+
 ![Dark banner with the text ‘GitHub Copilot Dev Days’ beside a green 3D block featuring the GitHub logo.](assets/github-copilot-dev-days.png)
 
 # GitHub Copilot Dev Days 2026 – Community Event Kit
diff --git a/content/README.md b/content/README.md
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+> **🚨 IMPORTANT**: The Dev Days content has moved! Looking for the new Dev Days page? [Go to the dev-days repo](https://gh.io/dev-days/repo).
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 # 📚 Content
 
 This folder contains the **official content** for **GitHub Copilot Dev Days**, including presentation slides and hands-on labs.
diff --git a/marketing/README.md b/marketing/README.md
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+> **🚨 IMPORTANT**: The Dev Days content has moved! Looking for the new Dev Days page? [Go to the dev-days repo](https://gh.io/dev-days/repo).
+
 # 📣 Marketing Toolkit
 
 This marketing toolkit provides everything you need to successfully promote your **GitHub Copilot Dev Days** event. All materials are professionally designed and ready to customize with your event details.
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+> **🚨 IMPORTANT**: The Dev Days content has moved! Looking for the new Dev Days page? [Go to the dev-days repo](https://gh.io/dev-days/repo).
+
 # 🎉 Organizer Guide: GitHub Copilot Dev Days
 
 GitHub Copilot Dev Days is a community-driven event created by Microsoft developers for the broader developer community. **The goal is to foster learning, collaboration, and innovation around GitHub Copilot.**