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Split Lyrical pages and add LTS info (backport #6806) #6807

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120 changes: 10 additions & 110 deletions source/Releases/Release-Lyrical-Luth.rst
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Expand Up @@ -9,126 +9,26 @@ Lyrical Luth (codename 'lyrical'; May, 2026)
:hidden:

Lyrical-Luth-Complete-Changelog

.. contents:: Table of Contents
:depth: 2
:local:
lyrical/release-timeline.rst
lyrical/supported-platforms.rst

*Lyrical Luth* is the twelfth release of ROS 2.
It is a Long Term Support (LTS) release, and it is supported until May 2031.

Release Timeline
----------------

**As soon as possible** - Migrate ROS Rolling to ROS Lyrical's target platforms
* RHEL 10 + Ubuntu 26.04: Migrate as soon as core packages successfully build on both platforms.
* Windows 11: Migrate as soon as we have a green build

**Mon. April 13, 2026** - Alpha + RMW freeze (*Delayed; was originally April 6th*)
* Preliminary testing of ROS Base packages
* API and feature freeze for RMW provider packages.

**Mon. April 20, 2026** - Freeze (*Delayed; was originally April 13th*)
* API and feature freeze for ROS Base packages in Rolling Ridley.
* Only bug fix releases should be made after this point.
* New packages can be released.

**Mon. April 21, 2026** - Branch (*Delayed; was originally April 20th*)
* Branch from Rolling Ridley
* ``rosdistro`` is reopened for Rolling PRs for ROS Base packages.
* Lyrical development shifts from ``ros-rolling-*`` packages to ``ros-lyrical-*`` packages.

**Mon. April 27, 2026** - Beta
* Updated releases of ROS Desktop packages available.
* Call for general testing.

**Thu, April 30, 2026** - Kick off Tutorial Party
* Open up tutorials for community testing.

**Mon. May 11, 2026** - Release Candidate
* Build release candidate packages up to ROS Desktop

**Mon. May 18, 2026** - Distro Freeze
* Freeze all Lyrical branches on all ROS desktop packages
* No pull requests for any Lyrical branch or targeting ``lyrical/distribution.yaml`` in ``rosdistro`` repo will be merged.

**Friday May 22nd, 2026** - General Availability
* Release announcement.
* ROS desktop packages source freeze is lifted and ``rosdistro`` is reopened for Lyrical pull requests.

For progress on the development of Lyrical Luth, see `this project board <https://github.com/orgs/ros2/projects/70>`__.
For the broad process followed by Lyrical Luth, see the :doc:`process description page <Release-Process>`.

Supported Platforms
-------------------

ROS Lyrical supports the following platforms according to `the platform support tiers <../The-ROS2-Project/Platform-Support-Tiers>`:

+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+
| Architecture | Ubuntu Resolute | Ubuntu Noble* | Windows 11 | RHEL 10 | macOS | Debian Trixie* | OpenEmbedded / |
| | (26.04) | (24.04) | (VS2022) | | | (13) | Yocto Project |
+==============+===================+===================+===============+===================+===========+=================+================+
| amd64 | Tier 1 [d][a] | Tier 3 | Tier 1 [a] | Tier 2 [d][a] | Tier 3 | Tier 3 | Tier 3 |
+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+
| arm64 | Tier 1 [d][a] | Tier 3 | | | | Tier 3 | Tier 3 |
+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+
| arm32 | Tier 3 | Tier 3 | | | | Tier 3 | Tier 3 |
+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+

* ``*`` Early EOL per `the platform EOL policy <../The-ROS2-Project/Platform-EOL-Policy>`
* Ubuntu Noble is supported until ``2029-06-01``
* Debian Trixie is supported until ``2028-08-09``
* ``[d]`` You may install ROS Lyrical on this platform using Distribution-specific packaegs (Debian, RPM, etc.).
* ``[a]`` You may install ROS Lyrical by downloading an archive containing pre-built packages for all packages in the `ROS Lyrical ros2.repos file <https://github.com/ros2/ros2/blob/lyrical/ros2.repos>`__

To use ROS Lyrical on any Tier 3 platform, you must build ROS Lyrical from source.

Minimum Language Requirements
-----------------------------

* `C++20 <https://discourse.openrobotics.org/t/ros-2-lyrical-c-version/52551>`__
* C17
* Python 3.12 - 3.14

Dependency Requirements
-----------------------

TODO - this section will show a table of important system package versions across supported platforms.

Middleware Implementation support
---------------------------------

The default middleware in ROS Lyrical is **rmw_fastrtps_cpp**.

+---------------------------+-------------------------+---------------+----------------------------+-------------------------------+
| Middleware Library | Middleware Provider | Support Level | Platforms | Architectures |
+===========================+=========================+===============+============================+===============================+
| rmw_fastrtps_cpp | eProsima Fast-DDS | Tier 1 | All Platforms | All Architectures |
+---------------------------+-------------------------+---------------+----------------------------+-------------------------------+
| rmw_connextdds | RTI Connext | Tier 1 | Ubuntu, Windows, and macOS | All Architectures except arm64|
+---------------------------+-------------------------+---------------+----------------------------+-------------------------------+
| rmw_cyclonedds_cpp | Eclipse Cyclone DDS | Tier 1 | All Platforms | All Architectures |
+---------------------------+-------------------------+---------------+----------------------------+-------------------------------+
| rmw_zenoh_cpp | Eclipse Zenoh | Tier 1 | All Platforms | All Architectures |
+---------------------------+-------------------------+---------------+----------------------------+-------------------------------+
| rmw_fastrtps_dynamic_cpp | eProsima Fast-DDS | Tier 2 | All Platforms | All Architectures |
+---------------------------+-------------------------+---------------+----------------------------+-------------------------------+
| rmw_gurumdds_cpp | GurumNetworks GurumDDS | Tier 3 | Ubuntu and Windows | All Architectures except arm32|
+---------------------------+-------------------------+---------------+----------------------------+-------------------------------+

Middleware implementation support is dependent upon the platform support tier.
For example, a Tier 1 middleware implementation on a Tier 2 platform will only receive Tier 2 support.

Installation
------------

TODO
* `Install Lyrical Luth <../../lyrical/Installation.html>`_
* :doc:`lyrical/release-timeline`
* :doc:`lyrical/supported-platforms`

New Features in Lyrical
-----------------------

This section highlights some of the new features in ROS Lyrical.
For all changes, see the :doc:`full ROS Lyrical changelog <Lyrical-Luth-Complete-Changelog>`.

.. contents:: Table of Contents
:depth: 1
:local:

Callback Group Events executor (``rclcpp``)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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44 changes: 44 additions & 0 deletions source/Releases/lyrical/release-timeline.rst
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Lyrical Luth Release Timeline
=============================

For progress on the development of Lyrical Luth, see `this project board <https://github.com/orgs/ros2/projects/70>`__.
For the broad process followed by Lyrical Luth, see the :doc:`process description page <../Release-Process>`.

**As soon as possible** - Migrate ROS Rolling to ROS Lyrical's target platforms
* RHEL 10 + Ubuntu 26.04: Migrate as soon as core packages successfully build on both platforms.
* Windows 11: Migrate as soon as we have a green build

**Mon. April 13, 2026** - Alpha + RMW freeze (*Delayed; was originally April 6th*)
* Preliminary testing of ROS Base packages
* API and feature freeze for RMW provider packages.

**Mon. April 20, 2026** - Freeze (*Delayed; was originally April 13th*)
* API and feature freeze for ROS Base packages in Rolling Ridley.
* Only bug fix releases should be made after this point.
* New packages can be released.

**Mon. April 21, 2026** - Branch (*Delayed; was originally April 20th*)
* Branch from Rolling Ridley
* ``rosdistro`` is reopened for Rolling PRs for ROS Base packages.
* Lyrical development shifts from ``ros-rolling-*`` packages to ``ros-lyrical-*`` packages.

**Mon. April 27, 2026** - Beta
* Updated releases of ROS Desktop packages available.
* Call for general testing.

**Thu, April 30, 2026** - Kick off Tutorial Party
* Open up tutorials for community testing.

**Mon. May 11, 2026** - Release Candidate
* Build release candidate packages up to ROS Desktop

**Mon. May 18, 2026** - Distro Freeze
* Freeze all Lyrical branches on all ROS desktop packages
* No pull requests for any Lyrical branch or targeting ``lyrical/distribution.yaml`` in ``rosdistro`` repo will be merged.

**Friday May 22nd, 2026** - General Availability
* Release announcement.
* ROS desktop packages source freeze is lifted and ``rosdistro`` is reopened for Lyrical pull requests.

**May, 2031** - End-of-life
* ROS Lyrical will stop receiving updates - including security updates
107 changes: 107 additions & 0 deletions source/Releases/lyrical/supported-platforms.rst
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Lyrical Luth Supported Platforms
================================

ROS Lyrical supports the following platforms according to :doc:`the platform support tiers <../../The-ROS2-Project/Platform-Support-Tiers>`:

+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+
| Architecture | Ubuntu Resolute | Ubuntu Noble* | Windows 11 | RHEL 10 | macOS | Debian Trixie* | OpenEmbedded / |
| | (26.04) | (24.04) | (VS2022) | | | (13) | Yocto Project |
+==============+===================+===================+===============+===================+===========+=================+================+
| amd64 | Tier 1 [d][a] | Tier 3 | Tier 1 [a] | Tier 2 [d][a] | Tier 3 | Tier 3 | Tier 3 |
+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+
| arm64 | Tier 1 [d][a] | Tier 3 | | | | Tier 3 | Tier 3 |
+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+
| arm32 | Tier 3 | Tier 3 | | | | Tier 3 | Tier 3 |
+--------------+-------------------+-------------------+---------------+-------------------+-----------+-----------------+----------------+

* ``*`` Early EOL per :doc:`the platform EOL policy <../../The-ROS2-Project/Platform-EOL-Policy>`
* Ubuntu Noble is supported until ``2029-06-01``
* Debian Trixie is supported until ``2028-08-09``
* ``[d]`` You may install ROS Lyrical on this platform using Distribution-specific packaegs (Debian, RPM, etc.).
* ``[a]`` You may install ROS Lyrical by downloading an archive containing pre-built packages for all packages in the `ROS Lyrical ros2.repos file <https://github.com/ros2/ros2/blob/lyrical/ros2.repos>`__

To use ROS Lyrical on any Tier 3 platform, you must build ROS Lyrical from source.

Minimum Language Requirements
-----------------------------

* `C++20 <https://discourse.openrobotics.org/t/ros-2-lyrical-c-version/52551>`__
* C17
* Python 3.12 - 3.14

Dependency Requirements
-----------------------

+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| | Required Support | Recommended Support |
+===============+=================+===============+===============+==========+==========+==================+====================+
| Package | Ubuntu Resolute | Windows 11 | Ubuntu Noble | RHEL 10 | macOS*** | Debian Trixie | OpenEmbedded |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| CMake | 4.2.3 | 3.28.3 | 3.28.3 | 3.30.5 | 4.3.2 | 3.31.6 | 4.3.2 |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| EmPY | 4.2.1 | 3.3.4 | 3.3.4 | 4.2.1 | | 3.3.4 | 3.3.2 |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| Gazebo | Jetty* | N/A | N/A | N/A | Jetty* | Jetty* | N/A |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| NumPy | 2.3.4 | 1.26.4 | 1.26.4 | 1.26.4 | 2.4.5 | 2.2.4 | N/A |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| Ogre | 1.12.10 | 1.12.10 | 1.12.10 | N/A | | 1.12.10 | N/A |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| OpenCV | 4.10.0 | 4.10.0 | 4.6.0 | 4.10.0 | 4.13.10 | 4.10.0 | 4.13.10 |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| OpenSSL | 3.5.5 | ``>=3.4`` | 3.0.13 | 3.5.1 | 3.6.2 | 3.5.6 | 3.5.6 |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| Python | 3.14.3 | 3.12.3 | 3.12.3 | 3.12.12 | 3.14.5 | 3.13.5 | 3.14.4 |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| Qt | 6.10.2 | ``>=6`` | 5.15.13 | 6.10.1 | 6.11.1 | 6.8.2 | N/A |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| PCL | 1.15.1 | N/A | 1.14.0 | 1.15.0* | 1.15.1 | 1.15.0 | 6.12.0 |
+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+

\" \* \" means that this is not the upstream version (available on the
official Operating System repositories) but a package distributed by
OSRF or the community (package built and distributed on custom
repositories).

\" \*\* \" means that the dependency may see multiple version changes,
because the dependency uses a package manager that continually updates
the dependency without a stable API.

This document only captures the version at the first release of a ROS
distribution and will not be updated as the dependencies move forward.
These versions are thus a low watermark.

Middleware Implementation support
---------------------------------

The default middleware in ROS Lyrical is **rmw_fastrtps_cpp**.

+---------------+-----------------+---------------+---------------+----------+----------+------------------+--------------------+
| Middleware | Ubuntu Resolute | Windows 11 | Ubuntu Noble | RHEL 10 | macOS | Debian Trixie | OpenEmbedded |
+===============+=================+===============+===============+==========+==========+==================+====================+
| Connext DDS | 7.7.0 | N/A | 7.7.0 | N/A |
+---------------+---------------------------------+--------------------------+----------+---------------------------------------+
| Cyclone DDS | 11.0.x |
+---------------+---------------------------------------------------------------------------------------------------------------+
| Fast-DDS | 3.6.x |
+---------------+---------------------------------------------------------------------------------------------------------------+
| Zenoh | 1.8.0 |
+---------------+---------------------------------------------------------------------------------------------------------------+


+---------------------------+-------------------------+---------------+-------------------------------+
| Middleware Library | Middleware Provider | Support Level | Architectures |
+===========================+=========================+===============+===============================+
| rmw_fastrtps_cpp | eProsima Fast-DDS | Tier 1 | All Architectures |
+---------------------------+-------------------------+---------------+-------------------------------+
| rmw_connextdds | RTI Connext | Tier 1 | All Architectures except arm64|
+---------------------------+-------------------------+---------------+-------------------------------+
| rmw_cyclonedds_cpp | Eclipse Cyclone DDS | Tier 1 | All Architectures |
+---------------------------+-------------------------+---------------+-------------------------------+
| rmw_zenoh_cpp | Eclipse Zenoh | Tier 1 | All Architectures |
+---------------------------+-------------------------+---------------+-------------------------------+
| rmw_fastrtps_dynamic_cpp | eProsima Fast-DDS | Tier 2 | All Architectures |
+---------------------------+-------------------------+---------------+-------------------------------+

Middleware implementation support is dependent upon the platform support tier.
For example, a Tier 1 middleware implementation on a Tier 2 platform will only receive Tier 2 support.
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