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ROS 2 Foxy Fitzroy (codename ‘foxy’; May 23rd, 2020)

Foxy Fitzroy is the sixth release of ROS 2.

Supported Platforms

Foxy Fitzroy is primarily supported on the following platforms:

Tier 1 platforms:

  • Ubuntu 20.04 (Focal): amd64 and arm64

  • Mac macOS 10.14 (Mojave)

  • Windows 10 (Visual Studio 2019)

Tier 2 platforms:

  • Ubuntu 20.04 (Focal): arm32

Tier 3 platforms:

  • Debian Buster (10): amd64, arm64 and arm32

  • OpenEmbedded Thud (2.6) / webOS OSE: arm32 and x86

For more information about RMW implementations, compiler / interpreter versions, and system dependency versions see REP 2000.

New features in this ROS 2 release

During the development the Foxy meta-ticket on GitHub contains an up-to-date state of the ongoing high level tasks as well as references specific tickets with more details.

Changes since the Eloquent release

Default working directory for ament_add_test

The default working directory for tests added with ament_add_test has been changed to CMAKE_CURRENT_BINARY_DIR to match the behavior of CMake add_test. Either update the tests to work with the new default or pass WORKING_DIRECTORY ${CMAKE_SOURCE_DIR} to restore the previous value.

Default Console Logging Format

The default console logging output format was changed to include the timestamp by default, see:

Default Console Logging Output Stream

As of Foxy, all logging messages at all severity levels get logged to stderr by default. This ensures that logging messages come out immediately, and brings the ROS 2 logging system into alignment with most other logging systems. It is possible to change the stream to stdout at runtime via the RCUTILS_LOGGING_USE_STDOUT environment variable, but all logging messages will still go to the same stream. See https://github.com/ros2/rcutils/pull/196 for more details.


Node name and namespace parameters changed

The Node action parameters related to naming have been changed:

  • node_name has been renamed to name

  • node_namespace has been renamed to namespace

  • node_executable has been renamed to executable

  • exec_name has been added for naming the process associated with the node. Previously, users would have used the name keyword argument.

The old parameters have been deprecated.

These changes were made to make the launch frontend more idiomatic. For example, instead of

<node pkg="demo_nodes_cpp" exec="talker" node-name="foo" />

we can now write

<node pkg="demo_nodes_cpp" exec="talker" name="foo" />

This change also applies to ComposableNodeContainer, ComposableNode, and LifecycleNode. For examples, see the relevant changes to the demos.

Related pull request in launch_ros.


Support for multiple on parameter set callbacks

Use the Node methods add_on_set_parameters_callback and remove_on_set_parameters_callback for adding and removing functions that are called when parameters are set.

The method set_parameters_calblack has been deprecated.

Related pull requests: https://github.com/ros2/rclpy/pull/457, https://github.com/ros2/rclpy/pull/504


Tools timestamp messages using ROS time

‘2D Pose Estimate’, ‘2D Nav Goal’, and ‘Publish Point’ tools now timestamp their messages using ROS time instead of system time, in order for the use_sim_time parameter to have an effect on them.

Related pull request: https://github.com/ros2/rviz/pull/519

Timeline before the release

A few milestones leading up to the release:

Wed. April 8th, 2020

API and feature freeze for ros_core 1 packages. Note that this includes rmw, which is a recursive dependency of ros_core. Only bug fix releases should be made after this point. New packages can be released independently.

Mon. April 13th, 2020 (beta)

Updated releases of desktop 2 packages available. Testing of the new features.

Wed. May 13th, 2020 (release candidate)

Updated releases of desktop 2 packages available.

Wed. May 20, 2020

Freeze rosdistro. No PRs for Foxy on the rosdistro repo will be merged (reopens after the release announcement).


The ros_core variant described in the variants repository.


The desktop variant described in the variants repository.