# GitHub Copilot weekly releases — August 31 By Steven Van · 2026-09-04 Claude Fable 5.1 reaches Copilot Pro+ and higher plans, Gemini 3.8 Flash expands further, and VS Code 1.136 adds an Agent Merge preview. This week's [GitHub]() Copilot changelog covers new model access, tighter content controls, and several VS Code updates. - **Claude Fable 5.1** is now available to Copilot Pro+, Max, Business, and Enterprise users. - **Gemini 3.8 Flash** is rolling out to Copilot Pro, Pro+, Max, Business, and Enterprise users. - The Copilot app and Copilot CLI now honor content exclusions, keeping sensitive code out of context across agentic workflows. - The GitHub Copilot harness is now generally available in Copilot for JetBrains, for faster feature delivery and better code quality. - VS Code 1.136 adds Agent Merge, in public preview, which gets a pull request ready to merge by resolving review feedback, failed checks, and merge conflicts. - Multi-root workspace support is now experimental, bringing Copilot and Claude agent sessions to every folder in a workspace. - Chat backgrounds are now experimental, letting users personalize the Agents window with built-in patterns or their own images. - Chat sessions now organize related chats into a hierarchy and flag which ones need attention. [![]()]() ![GitHub]() GitHub Where the world builds software — Git hosting, pull requests, issues, Actions CI/CD, and Copilot, free for public and private repos. [View GitHub →]() [Original source]() [Read GitHub Copilot weekly releases — August 31 on Creators Toolbox]() --- Canonical source: https://creatorstoolbox.com/blog/github-github-copilot-weekly-releases-august-31