GitHub Copilot weekly releases — September 21

Published September 25, 2026 · Category: AI Create

Overview

This week’s releases add new models to Copilot, local sandboxing in the Copilot app, and updates to Copilot in Slack, Microsoft Teams, JetBrains, and VS Code.

GitHub Copilot

• Claude Opus 5.5 is available to Copilot Pro+, Max, Business, and Enterprise plans.
• GPT-6 Sol is available to Copilot Pro+, Max, Business, and Enterprise plans.
• GPT-6 Luna is available to Copilot Pro, Pro+, Max, Business, and Enterprise plans.
• Grok 4.7 is available to Copilot Pro, Pro+, Max, Business, and Enterprise plans.

GitHub Copilot app

• Limit agents’ access to files, networks, and credentials with local sandboxing, now in public preview.
• Track agent activity in your existing monitoring tools with OpenTelemetry, configured through enterprise-managed settings.

Download the Copilot app.

GitHub Copilot in Slack and Microsoft Teams

• Choose the best model for each task. Switch models mid-conversation, and Copilot keeps your choice for the rest of the thread. In Slack, you can also set channel defaults.
• Avoid duplicate issues since Copilot now checks for similar existing issues before creating a new one.
• Follow longer-running tasks more easily with clearer implementation-plan status, better recovery from interrupted or stale replies, and more predictable reconnection when a conversation goes idle.
• Give Copilot more context in Slack by sharing supported files, attachments, and message links.

Learn more about GitHub Copilot public previews in Slack and Teams.

GitHub Copilot in JetBrains

• Assisted approvals, now in public preview for Copilot agent sessions, automatically approve low-risk tool calls while prompting you for higher-risk actions.
• Edit an earlier message to redirect an agent session and Copilot rewinds both the conversation and file changes before sending the replacement request.
• Shared organization and enterprise skills, along with organization-managed custom instructions, now work in local and Copilot agent sessions.

Learn more in the full Copilot in JetBrains changelog.

GitHub Copilot in VS Code 1.139 release

• Run agents in Dev Containers on SSH, Tunnel, and WSL hosts, using your remote project’s tools and dependencies. Support is rolling out gradually.
• Keep busy session lists organized with Compact View, filters to hide empty groups, and the ability to rename sessions and chats directly in the list.
• Choose between separate chat tabs or a single active-chat view within a session, without losing your conversations. This layout option is now in preview.

Explore everything that’s new in the full release notes.

The post GitHub Copilot weekly releases — September 21 appeared first on The GitHub Blog.

Source

Originally published at github.blog.

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