Summary
On July 7, 2026, GitHub released a public preview making OpenAI Codex a selectable agent provider inside JetBrains IDEs, expanded the Copilot Customizations editor with hooks support and richer MCP server management, and let Business and Enterprise admins configure custom models. It also added approval-mode settings for Copilot CLI sessions and took Inline Chat to general availability.
What changed
Codex became a public-preview agent provider in JetBrains IDEs; the Customizations editor added hooks and full MCP server management (browse, add, start/stop/restart, .github/mcp.json); admins can configure custom models; Copilot CLI gained Default, Bypass, and Autopilot approval modes; Inline Chat reached general availability.
Why it matters
Letting developers pick Codex vs. Claude vs. Copilot per task inside the IDE turns Copilot into a multi-agent host rather than a single-model assistant, while admin-configured custom models and MCP management push agent governance into enterprise IT controls.
Evidence excerpt
Codex is now available as an agent provider in public preview. The Agent Customizations feature now lets developers manage hooks directly within the IDE. Enterprise and Business administrators can now configure custom models in GitHub settings.