GitHub announced a major JetBrains Copilot update on March 11, 2026. Custom agents, sub-agents, and plan agent are now generally available, while agent hooks, MCP auto-approve, and project instruction file support push the IDE further toward full agent workflows.
On March 13, 2026, GitHub showed a Copilot SDK and Remotion demo that turns a WhatsApp message into a promo video in about five minutes. GitHub’s official SDK announcement describes the stack as a programmable layer that can plan, invoke tools, edit files, and run commands inside other applications.
GitHub used X on March 15, 2026 to spotlight the Copilot CLI `/fleet` command for routine maintenance work. GitHub’s official Copilot CLI materials now describe `/fleet` as a parallel sub-agent workflow that converges multiple runs into one decision-ready result.
GitHub moved Copilot’s coding agent for Jira into public preview on March 5, 2026. Teams can assign Jira Cloud issues to the agent, let it implement changes in a connected repository, open a draft pull request, and post progress back into Jira.
GitHub on March 11, 2026 announced a major JetBrains update for Copilot. Custom agents, sub-agents, and plan agent are now generally available, with agent hooks in preview and new governance and reasoning controls added around them.
GitHub on March 5, 2026 said GPT-5.4 is generally available in GitHub Copilot. The rollout spans major IDEs, GitHub CLI, mobile apps, github.com, and the Copilot Coding Agent.
A LocalLLaMA post pointed to a new Hugging Face dataset of human-written code reviews, pairing before-and-after code changes with inline reviewer comments and negative examples across 37 languages.
GitHub used X on March 9, 2026 to resurface its guide to building reliable multi-agent systems. The company argues that most failures come from missing structure, and recommends typed schemas, action schemas, and Model Context Protocol as the core engineering controls.
GitHub said on February 26, 2026 that Claude by Anthropic and OpenAI Codex are now available as coding agents for Copilot Business and Copilot Pro customers. The release brings multi-agent choice into github.com, GitHub Mobile, and VS Code without requiring an extra subscription.
GitHub said on March 5, 2026 that Copilot code review now runs on an agentic tool-calling architecture and is generally available for Copilot Pro, Pro+, Business, and Enterprise. The update is designed to pull wider repository context into reviews so comments are higher-signal and less noisy.
GitHub Copilot CLI is now generally available, bringing Copilot into the terminal for standard subscribers. GitHub paired the release with broader Copilot changes including next edit suggestions, MCP-enabled agent mode, background agents, and a higher-end Pro+ plan.
OpenAI Developers said on March 6, 2026 that Codex Security is now in research preview. The product connects to GitHub repositories, builds a threat model, validates potential issues in isolation, and proposes patches for human review.