Upcoming Lyrical Feature Freeze
Core packages for the next-gen robotics OS will lock down on April 21, 2026.
The Robot Operating System (ROS) 2 project is gearing up for its next major release, codenamed Lyrical Luth. The project's maintainers have announced a critical development milestone: a feature freeze for all core ROS 2 packages, effective April 21, 2026, at 06:59 UTC. This freeze applies to the packages and vendor packages defined in the project's central manifest file (ros2.repos). The purpose is to stabilize the codebase in preparation for branching the Lyrical Luth version from the continuous Rolling distribution.
While new feature development is halted, the team will continue to accept and integrate bug fixes during this period. This standard practice in software release cycles ensures that the upcoming stable release, slated for May 22, 2026, is as robust as possible. The announcement follows the established naming convention of using alliterative adjectives and nouns (e.g., previous releases like Iron Irwini and Jazzy Jalisco) and provides a clear timeline for developers and integrators in the robotics community to plan their testing and migration efforts.
- A feature freeze for ROS 2 Lyrical Luth begins on April 21, 2026, at 06:59 UTC.
- The freeze applies to all core and vendor packages in the official ros2.repos manifest file.
- The stable Lyrical Luth release is officially scheduled for May 22, 2026.
Why It Matters
This freeze signals the final stabilization phase for a key robotics framework, allowing developers to plan integrations and testing for the new stable release.