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GitHub Changelog · Published 2026-09-05

Copilot updates: content exclusions, organized sessions and merge tasks

Copilot applies content exclusions, organizes chats into hierarchies, and previews help with review feedback and merge conflicts. The update also changes model choices for some accounts.

Image accompanying “GitHub Copilot weekly releases — August 31”
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Model choices and access

GitHub’s roundup covers Copilot models, content exclusions and session management. Claude Fable 5.1 is available on specified plans, while Gemini 3.8 Flash is rolling out. Account plans and organization policy affect access.

Copilot weekly update showing model access, content exclusions, three parallel Agent Merge tasks, and hierarchical chats.
Based on GitHub's weekly roundup · 2026-09-04 · conceptual illustration · Open full-size image

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From content exclusions to merge work

The Copilot app and CLI now honor content exclusions. VS Code Agent Merge enters public preview for review feedback, failed checks and merge conflicts. Chat sessions support hierarchical organization; multi-root workspaces remain experimental.

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