Developer changelog updates for Jun 26, 2026

Summary

Adds total merge count per AI adoption phase to enterprise and organization reports

Summary

GitHub Actions now issues read‑only cache tokens for workflow events triggered without write permissions.

Summary

MAI-Code-1-Flash, Microsoft’s in‑house coding model, is now generally available for GitHub Copilot Business and Enterprise users

Summary

Amazon EC2 R8g (Graviton4) instances are now available in five new regions (Thailand, New Zealand, Cape Town, Milan, Calgary)

Summary

Added Git worktree support, allowing multiple workspaces per repository directly in GitHub Desktop.