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168 changes, 0 breaking, breaking first, read from https://github.blog/changelog. The words and the dates are the source's; the severity is reef's.

AllBreakingNotable
  1. notable
    GitHub Copilot in Visual Studio — September update · copilot
  2. notable
    GitHub CLI: Opt in to expiring, auto-refreshing OAuth tokens · application-security, client-apps
  3. notable
    GitHub package firewall in public preview · supply-chain-security, universe26
  4. notable
    Open source license compliance generally available · supply-chain-security, universe26
  5. notable
    Xcode 27 runner image generally available · actions
  6. notable
    AI Scan for pull requests generally available · application-security, universe26
  7. notable
    Agentic autofix for code scanning alerts general availability · application-security, copilot, universe26
  8. notable
    HydraFusion updates and new Max option · copilot
  9. notable
    GitHub Actions workflow lockfiles in public preview · actions
  10. notable
    Gemini 4 Argon in GitHub Copilot · copilot
  11. notable
    Push attribution for commits in limited public preview · application-security, platform-governance
  12. notable
    New controls and chat improvements in Copilot for JetBrains · copilot, enterprise-management-tools
  13. notable
    GitHub Copilot weekly releases — October 5 · copilot
  14. notable
    Purpose-built model for leaked secret detection · application-security, copilot
  15. notable
    Local sandboxing for GitHub Copilot now generally available · application-security, copilot, platform-governance
  16. notable
    Claude Haiku 5.5 in GitHub Copilot · copilot
  17. notable
    Stacked pull requests generally available · collaboration-tools
  18. notable
    Repository security advisory comments API in public preview · ecosystem-and-accessibility, supply-chain-security
  19. notable
    GitHub Copilot weekly releases — September 28 · copilot
  20. notable
    Confidential comments on repository security advisories · supply-chain-security
  21. notable
    Structured forms for private vulnerability reports · supply-chain-security
  22. notable
    GitHub Copilot in VS Code, September 2026 releases · copilot
  23. notable
    GitHub Copilot can now interact with desktop apps with computer use · client-apps, copilot
  24. notable
    GitHub async merge API generally available · collaboration-tools
  25. notable
    Dynamic workflows in Copilot CLI and the Copilot app · copilot
  26. notable
    Actions Runner Controller release 0.15.0 · actions
  27. notable
    HydraFusion in VS Code and the GitHub Copilot app · copilot
  28. notable
    GitHub Advanced Security trials for GitHub Team · application-security
  29. notable
    GPT-6.1 Sol in GitHub Copilot · copilot
  30. notable
    Bring business context with external custom properties · platform-governance
  31. notable
    Claude Sonnet 5.5 in GitHub Copilot · copilot
  32. notable
    GitHub Copilot weekly releases — September 21 · copilot
  33. notable
    Require proof of presence for high-impact actions · account-management, application-security, enterprise-management-tools
  34. notable
    Local sandboxing in the GitHub Copilot app · copilot
  35. notable
    OpenTelemetry in the GitHub Copilot app · copilot
  36. notable
    OpenAI’s GPT-6 Sol and GPT-6 Luna now available · copilot
  37. notable
    New features and improvements in Copilot for JetBrains · copilot
  38. notable
    Faster C++ code intelligence with whole codebase indexing · copilot
  39. notable
    Claude Opus 5.5 is now available in GitHub Copilot · copilot
  40. notable
    Refreshed repository pull requests page generally available · collaboration-tools
  41. notable
    Grok 4.7 is now available in GitHub Copilot · copilot
  42. notable
    GitHub Enterprise adds credential inventory exports · application-security, enterprise-management-tools
  43. notable
    GitHub Copilot weekly releases — September 14 · copilot
  44. notable
    Workflow execution protections in GitHub Actions generally available · actions, supply-chain-security
  45. notable
    Copilot budget increase requests are generally available · copilot
  46. notable
    Automate SSO authorization for classic PATs and SSH keys · account-management, enterprise-management-tools
  47. notable
    GitHub Copilot suggests custom properties definitions · copilot, platform-governance
  48. notable
    Configure cost and quality in Copilot auto model selection · copilot
  49. notable
    Refreshed repository pull requests page in public preview · collaboration-tools
  50. notable
    GitHub Copilot weekly releases — September 7 · copilot
  51. notable
    Remediate Code Quality findings with agentic autofix · application-security
  52. notable
    New customer portal help.github.com · account-management
  53. notable
    GitHub Enterprise Server 3.22 is now generally available · collaboration-tools
  54. notable
    Enterprise-managed sandbox in Copilot for JetBrains · copilot, enterprise-management-tools
  55. notable
    New API endpoint provides privacy-safe star history data · collaboration-tools
  56. notable
    GPT-6 Astra is generally available in GitHub Copilot · copilot
  57. notable
    GitHub Copilot weekly releases — August 31 · copilot
  58. notable
    Reopening Copilot Business and Enterprise signups · account-management, copilot
  59. notable
    Multiple trusted publishing configurations for npm · supply-chain-security
  60. notable
    Gemini 3.8 Flash is now available in GitHub Copilot · copilot
  61. notable
    Content exclusions generally available in Copilot app and CLI · copilot
  62. notable
    GitHub CLI: Media in issues, pull requests, and comments · client-apps
  63. notable
    Enterprise Live Migrations from GHES to ghe.com generally available · enterprise-management-tools
  64. notable
    Copilot code review can now approve pull requests · copilot
  65. notable
    Claude Fable 5.1 is generally available in GitHub Copilot · copilot
  66. notable
    GitHub Copilot in VS Code, August 2026 releases · copilot
  67. notable
    GitHub Copilot weekly releases — August 24 · copilot
  68. notable
    GitHub Copilot in Visual Studio — August update · copilot
  69. notable
    GitHub Apps can now access enterprise billing data · account-management, ecosystem-and-accessibility, enterprise-management-tools
  70. notable
    GitHub Copilot app Customize tab is generally available · copilot
  71. notable
    Copilot harness generally available in Copilot for JetBrains · copilot
  72. notable
    The new GitHub Copilot experience in Slack · collaboration-tools, copilot
  73. notable
    Shared agentic work with GitHub Copilot in Microsoft Teams · collaboration-tools, copilot
  74. notable
    Code scanning adds a mitigated alert dismissal reason · application-security
  75. notable
    Enterprise managed settings in GitHub Copilot for JetBrains · copilot, enterprise-management-tools
  76. notable
    Grok 4.6 is now available in GitHub Copilot · copilot
  77. notable
    GitHub Copilot weekly releases — August 10 · copilot
  78. notable
    Gemini 3.7 Flash is now available in GitHub Copilot · copilot
  79. notable
    Agent Plugins 1.0 in VS Code, Copilot CLI, and the Copilot app · copilot
  80. notable
    MAI-Code-1.1-Flash available in GitHub Copilot · copilot
  81. notable
    GitHub Enterprise Server 3.22 release candidate · collaboration-tools
  82. notable
    Copilot memory and Ollama in GitHub Copilot for JetBrains · copilot, enterprise-management-tools
  83. notable
    Automatically migrate branch protection rules to repository rulesets · platform-governance
  84. notable
    GitHub Copilot weekly releases — August 3 · copilot
  85. notable
    Copilot code review effort levels are generally available · copilot
  86. notable
    “Relates to” issue relationship in public preview and multi-select fields is generally available · projects-and-issues
  87. notable
    MCP allowlists in enterprise managed settings · copilot
  88. notable
    Kimi K3 is now available in GitHub Copilot · copilot
  89. notable
    Customize code scanning default setup at scale · application-security
  90. notable
    Trigger Copilot automations with comments · copilot
  91. notable
    Migrate from GitLab to GitHub with GitHub Enterprise Importer · enterprise-management-tools
  92. notable
    Enterprise team specialization for managed settings · client-apps, copilot, enterprise-management-tools
  93. notable
    Customize the reasoning level for Copilot cloud agent · copilot
  94. notable
    Stacked pull requests are now in public preview · collaboration-tools
  95. notable
    Reference same-repository actions with self-repository syntax · actions
  96. notable
    GitHub Copilot in Visual Studio — July update · copilot
  97. notable
    GitHub Copilot in Visual Studio Code, July 2026 releases · copilot
  98. notable
    npm publish-time malware scanning and dual-use metadata · supply-chain-security
  99. notable
    Grok 4.5 is now available in GitHub Copilot · copilot
  100. notable
    Manage GitHub Copilot app access with a dedicated policy · client-apps, copilot, enterprise-management-tools
  101. notable
    GitHub Copilot for JetBrains adds improved OpenTelemetry configuration and model management · copilot, enterprise-management-tools
  102. notable
    Enterprise managed settings in the GitHub Copilot app and Copilot cloud agent · client-apps, copilot, enterprise-management-tools
  103. notable
    Claude Opus 5 is now available in GitHub Copilot · copilot
  104. notable
    GitHub MCP Server supports the next MCP specification · copilot
  105. notable
    Copilot cloud agent for Linear is now generally available · copilot
  106. notable
    Agent automation controls in GitHub Issues in public preview · collaboration-tools, copilot, projects-and-issues
  107. notable
    New Copilot usage metrics impact dashboard · account-management, copilot, enterprise-management-tools
  108. notable
    Gemini 3.6 Flash is now available in GitHub Copilot · copilot
  109. notable
    GitHub Code Quality is now generally available · application-security
  110. notable
    Repository-level GitHub Copilot usage metrics generally available · account-management, copilot, enterprise-management-tools
  111. notable
    Xcode 27 runner image now in public preview · actions
  112. notable
    Repository admins can archive pull requests · collaboration-tools
  113. notable
    GitHub Copilot in Visual Studio — June update · copilot
  114. notable
    Code scanning shows AI security detections on pull requests · application-security
  115. notable
    GitHub Code Quality license estimate in public preview · account-management, application-security
  116. notable
    Manage secret scanning custom patterns via REST API · application-security
  117. notable
    Per-user states for multi-user budgets in the REST API · account-management, enterprise-management-tools
  118. notable
    Agentic autofix for code scanning alerts in public preview · application-security, copilot
  119. notable
    Organization-level targeting for GitHub Code Quality · application-security, enterprise-management-tools, platform-governance
  120. notable
    OpenAI’s GPT-5.6 Sol, Terra, and Luna are now available in GitHub Copilot · copilot
  121. notable
    New pull requests dashboard is now generally available · collaboration-tools
  122. notable
    Ask Copilot for a repository overview · copilot
  123. notable
    setup-java v5.5.0: signature verification, Kona JDK, and Maven fixes · actions
  124. notable
    Innersource security advisories are generally available · supply-chain-security
  125. notable
    GitHub Mobile: Live notifications for Copilot CLI sessions · client-apps
  126. notable
    GitHub Mobile: Fix merge conflicts with Copilot cloud agent · client-apps
  127. notable
    GitHub Copilot in Visual Studio Code, June 2026 releases · copilot
  128. notable
    Enterprise-managed OpenTelemetry export for VS Code and CLI · client-apps, copilot, enterprise-management-tools
  129. notable
    Deploy managed Copilot settings via MDM in VS Code and CLI · client-apps, copilot, enterprise-management-tools
  130. notable
    Secret scanning extended metadata and multipart validation · application-security
  131. notable
    Restrict who can dismiss reviews in rulesets · platform-governance
  132. notable
    Kimi K2.7 now available for Copilot Business and Enterprise · copilot
  133. notable
    GitHub Copilot app available to all · copilot
  134. notable
    Issue fields are now generally available · projects-and-issues
  135. notable
    Cost centers now support AI credit pools · account-management, copilot
  136. notable
    Copilot CLI no longer needs a personal access token in GitHub Actions · copilot
  137. notable
    Set AI credit session limits in Copilot CLI and SDK · client-apps, copilot
  138. notable
    Secret scanning public monitoring for enterprises · application-security
  139. notable
    Kimi K2.7 Code is generally available in GitHub Copilot · copilot
  140. notable
    Enterprise managed-settings.json is generally available · client-apps, copilot, enterprise-management-tools
  141. notable
    Copilot vision is generally available · copilot
  142. notable
    Browser tools for GitHub Copilot in VS Code are generally available · copilot
  143. notable
    Per-user AI credit budgets available for cost centers · copilot, enterprise-management-tools
  144. notable
    Open source license compliance is in public preview · supply-chain-security
  145. notable
    Copilot Agent is now available in JetBrains AI Assistant · copilot
  146. notable
    Claude Sonnet 5 is generally available for GitHub Copilot · copilot
  147. notable
    Claude Opus 4.8 (fast mode) is now in preview for GitHub Copilot · copilot
  148. notable
    MAI-Code-1-Flash for Copilot Business and Copilot Enterprise · copilot
  149. notable
    GitHub Desktop 3.6: Worktrees and deeper Copilot integration · client-apps
  150. notable
    Saved views for repository issues – Public Preview and adjustable row heights in projects · projects-and-issues
  151. notable
    Red Hat Enterprise Linux runner images are now in public preview · actions
  152. notable
    More control over your GitHub-hosted runners · actions
  153. notable
    GitHub Copilot app support for BYOK · copilot
  154. notable
    Fetch Code Quality findings via REST API · application-security
  155. notable
    Copilot CLI: New terminal interface is generally available · client-apps, copilot
  156. notable
    AI credits consumed per user now in the Copilot usage metrics API · account-management, copilot, enterprise-management-tools
  157. notable
    Safer pull_request_target defaults for GitHub Actions checkout · actions, supply-chain-security
  158. notable
    MAI-Code-1-Flash available on more Copilot surfaces · copilot
  159. notable
    Detecting Duplicate Issues – Public Preview and issue fields MCP support for GitHub Issues · projects-and-issues
  160. notable
    Control who and what triggers GitHub Actions workflows · actions, supply-chain-security
  161. notable
    Read remote repository content with GitHub CLI · client-apps
  162. notable
    GitHub Copilot app generally available · copilot
  163. notable
    Copilot individual plan sign-ups are reopening · copilot
  164. notable
    Copilot CLI supports enterprise bring your own key (BYOK) models · client-apps, copilot
  165. notable
    Auto mode in Copilot Chat available for all users · copilot
  166. notable
    Agent finder for GitHub Copilot now available · copilot
  167. notable
    Organization-level enablement for GitHub Code Quality · application-security, enterprise-management-tools
  168. notable
    GitHub Code Quality generally available July 20, 2026 · application-security, platform-governance