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GitLab 19.3 Release Notes

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feature announcement

GitLab 19.3 introduces a suite of new AI-powered features and enhancements for developers and administrators. Key additions include the Flow Creator foundational agent in the AI Catalog and the GitLab Secrets Manager for secure credential handling, now in Limited Availability. The release also brings General Availability for GitLab Duo to resolve merge conflicts and review discussions, alongside experimental CLI plugins and a beta Agentic Chat UI for VS Code and JetBrains IDEs. These updates aim to streamline development workflows, enhance security, and expand AI assistance across the GitLab platform.

  • →Create custom GitLab Duo Agent flows with plain language
  • →Secure credential management with GitLab Secrets Manager (Limited Availability)
  • →GitLab Duo resolves merge conflicts automatically (GA)
  • →GitLab Duo resolves code review discussions automatically (GA)
  • →Expanded GitLab Duo CLI plugins and new Agentic Chat UI (Beta/Experiment)
Features (5) ›
  • Create custom GitLab Duo Agent flows with plain language

    The new Flow Creator foundational agent, available in the AI Catalog, allows users to describe desired flow actions in plain language. It then generates runnable flow YAML, streamlines debugging, and explains framework concepts.

  • Secure credential management with GitLab Secrets Manager (Limited Availability)

    GitLab Secrets Manager is now in Limited Availability on GitLab.com, offering secure, job-scoped credential storage. It integrates with existing group/project permissions and logs all actions to the audit trail, reducing credential leak risks.

  • GitLab Duo resolves merge conflicts automatically (GA)

    GitLab Duo can now automatically resolve merge conflicts from the merge widget or resolve conflicts page. It analyzes conflicts, edits files, commits the resolution to the source branch, and posts a summary comment on the merge request.

  • GitLab Duo resolves code review discussions automatically (GA)

    Users can now select "Resolve with GitLab Duo" to have the AI address code review comments. Duo reads the comment and surrounding code, makes changes on the source branch, replies with a summary, and resolves the thread.

  • Expanded GitLab Duo CLI plugins and new Agentic Chat UI (Beta/Experiment)

    GitLab Duo CLI now supports plugins and marketplaces as an experiment, including skills for MR review and issue creation. Additionally, a redesigned Agentic Chat UI is in beta for VS Code and JetBrains IDEs, offering the same underlying AI capabilities.

Enhancements (1) ›
  • Enhanced AI agent tools and OAuth application management

    New MCP tools allow AI agents to retrieve merge requests with all related data in a single call and search/filter MRs. OAuth application management is improved, enabling pre-registration of MCP scopes and clear identification of users who authorized dynamic OAuth applications in the Admin Area.

Read the original announcement →

https://docs.gitlab.com/releases/19/gitlab-19-3-released/

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