- Introduces the ability to build new custom GitHub Actions runner images using existing custom images as a base.
- Provides greater flexibility for composing and managing image-generation pipelines for GitHub‑hosted runners.
Actions: Build custom images from custom images
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Adds a public preview of GitHub Copilot integration in Slack, exposing Copilot CLI and app capabilities via the @GitHub bot.
Introduces collaborative GitHub Copilot agent sessions directly within Microsoft Teams discussions