Data and AI releases

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Config validation warnings will block pipelines on December 14, 2026

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Starting December 14, 2026, CircleCI will treat config validation warnings as hard failures, blocking pipeline execution. Users are advised to review and fix existing warnings before this date.

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Also shipped Nov 10, 2026CircleCI in November 2026 →

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Improved commit status links and failure details

We’ve updated the commit statuses CircleCI posts to your VCS to make it faster to see which run failed and why, for both people and AI agents. More descriptive status URLs Status links previously used the format https://circleci.com/{project-slug}/{build-number} .

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Functions now available in beta

CircleCI launched Functions in beta, allowing developers and AI agents to define, version, pin, and reuse CI environment setup modules via CLI and MCP server.

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Server Release 4.10.2

CircleCI Server 4.10.2 includes security updates to reject compromised certificates and adds new Kong routes for the OAuth authorization server.

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Server Release 4.9.7

CircleCI Server 4.9.7 includes security updates to reject compromised certificates and adds new Kong routes for the OAuth authorization server.

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