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The GitHub Blog
github.blog > engineering > architecture-optimization > the-uphill-climb-of-making-diff-lines-performant

The uphill climb of making diff lines performant

5+ hour, 15+ min ago  (1743+ words) Learn about artificial intelligence and machine learning across the GitHub ecosystem and the wider industry. Learn how to build with generative AI. Change how you work with GitHub Copilot. Everything developers need to know about LLMs. Machine learning tips, tricks,…...

The GitHub Blog
github.blog > changelog > 2026-04-02-github-copilot-in-visual-studio-march-update

GitHub Copilot in Visual Studio — March update - GitHub Changelog

1+ day, 6+ hour ago  (348+ words) GitHub Copilot in Visual Studio " March update'The GitHub Blog March 2026 brought a major step forward for GitHub Copilot extensibility in Visual Studio, with custom agents, agent skills, and new tools that make the agent smarter and more capable. Here's what's…...

The GitHub Blog
github.blog > changelog > 2026-04-02-github-actions-early-april-2026-updates

GitHub Actions: Early April 2026 updates - GitHub Changelog

1+ day, 4+ hour ago  (253+ words) This month, GitHub Actions adds entrypoint and command overrides for service containers and new security features including OIDC custom properties and VNET failover. GitHub Actions OpenID Connect (OIDC) tokens include repository custom properties as claims, and this feature is now…...

The GitHub Blog
github.blog > changelog > 2026-04-02-copilot-organization-custom-instructions-are-generally-available

Copilot organization custom instructions are generally available - GitHub Changelog

1+ day, 8+ hour ago  (56+ words) Copilot organization custom instructions are generally available'The GitHub Blog Organization custom instructions for GitHub Copilot, first introduced in April 2025, are now generally available. With organization custom instructions, Copilot Business and Copilot Enterprise organization administrators can set default instructions that guide…...

The GitHub Blog
github.blog > changelog > 2026-04-01-github-mobile-faster-more-flexible-agent-assignment-from-issues

GitHub Mobile: Faster, more flexible agent assignment from issues - GitHub Changelog

2+ day, 4+ hour ago  (118+ words) GitHub Mobile now makes it easier to delegate work with a new Assign an Agent option in the issue overflow menu, so you can get started more quickly. When assigning an agent, you can now add custom instructions and choose…...

The GitHub Blog
github.blog > security > supply-chain-security > securing-the-open-source-supply-chain-across-github

Securing the open source supply chain across GitHub

2+ day, 1+ hour ago  (961+ words) Learn about artificial intelligence and machine learning across the GitHub ecosystem and the wider industry. Learn how to build with generative AI. Change how you work with GitHub Copilot. Everything developers need to know about LLMs. Machine learning tips, tricks,…...

The GitHub Blog
github.blog > ai-and-ml > github-copilot > run-multiple-agents-at-once-with-fleet-in-copilot-cli

Run multiple agents at once with /fleet in Copilot CLI

2+ day, 6+ hour ago  (1180+ words) Learn about artificial intelligence and machine learning across the GitHub ecosystem and the wider industry. Learn how to build with generative AI. Change how you work with GitHub Copilot. Everything developers need to know about LLMs. Machine learning tips, tricks,…...

The GitHub Blog
github.blog > changelog > 2026-03-31-github-secret-scanning-nine-new-types-and-more

GitHub secret scanning — coverage update - GitHub Changelog

3+ day, 4+ hour ago  (284+ words) GitHub secret scanning continually updates its detectors, validators, and analyzers. Here's what's new. Missed our last update? Catch up on recently added detectors or see the full list of supported secrets in our product documentation. Secret scanning now automatically detects…...

The GitHub Blog
github.blog > changelog > 2026-03-31-codeql-2-25-0-adds-swift-6-2-4-support

CodeQL 2.25.0 adds Swift 6.2.4 support - GitHub Changelog

3+ day, 7+ hour ago  (185+ words) CodeQL 2.25.0 adds Swift 6.2.4 support'The GitHub Blog CodeQL is the static analysis engine behind GitHub code scanning, which finds and remediates security issues in your code. We've recently released CodeQL 2.25.0, which upgrades Swift analysis to 6.2.4, rewrites the Java control flow graph…...

The GitHub Blog
github.blog > ai-and-ml > github-copilot > agent-driven-development-in-copilot-applied-science

Agent-driven development in Copilot Applied Science

3+ day, 5+ hour ago  (1461+ words) Learn about artificial intelligence and machine learning across the GitHub ecosystem and the wider industry. Learn how to build with generative AI. Change how you work with GitHub Copilot. Everything developers need to know about LLMs. Machine learning tips, tricks,…...