Add initial timeline for Kilted Kaiju

* Also populate the platform targets based on current REP-2000 proposal.

source/Releases/Release-Kilted-Kaiju.rst

@@ -19,15 +19,17 @@ Kilted Kaiju is primarily supported on the following platforms:
 
 Tier 1 platforms:
 
-* TODO
+* Ubuntu 24.04 (Noble): ``amd64`` and ``arm64``
+* Windows 10 (Visual Studio 2019): ``amd64``
 
 Tier 2 platforms:
 
-* TODO
+* RHEL 9: ``amd64``
 
 Tier 3 platforms:
 
-* TODO
+* macOS: ``amd64``
+* Debian Bookworm: ``amd64``
 
 For more information about RMW implementations, compiler / interpreter versions, and system dependency versions see `REP 2000 <https://www.ros.org/reps/rep-2000.html>`__.
 
@@ -45,3 +47,44 @@ Development progress
 For progress on the development of Kiltled Kaiju, see `this project board <https://github.com/orgs/ros2/projects/63>`__.
 
 For the broad process followed by Kilted Kaiju, see the :doc:`process description page <Release-Process>`.
+
+Release Timeline
+----------------
+
+    December, 2024 - Platform decisions
+        REP 2000 is updated with the target platforms and major dependency versions.
+
+    Mon. April 7, 2025 - Alpha + RMW freeze
+        Preliminary testing and stabilization of ROS Base [1]_ packages, and API and feature freeze for RMW provider packages.
+
+    Mon. April 14, 2024 - Freeze
+        API and feature freeze for ROS Base [1]_ packages in Rolling Ridley.
+        Only bug fix releases should be made after this point.
+        New packages can be released independently.
+
+    Mon. April 22, 2024 - Branch
+        Branch from Rolling Ridley.
+        ``rosdistro`` is reopened for Rolling PRs for ROS Base [1]_ packages.
+        Kilted development shifts from ``ros-rolling-*`` packages to ``ros-kilted-*`` packages.
+
+    Mon. April 28, 2024 - Beta
+        Updated releases of ROS Desktop [2]_ packages available.
+        Call for general testing.
+
+    Thu, May 1, 2024 - Kick off of Tutorial Party
+        Tutorials hosted at https://github.com/osrf/ros2_test_cases are open for community testing.
+
+    Mon. May 12, 2024 - Release Candidate
+        Release Candidate packages are built.
+        Updated releases of ROS Desktop [2]_ packages available.
+
+    Mon. May 19, 2024 - Distro Freeze
+        Freeze all Kilted branches on all `ROS 2 desktop packages <https://www.ros.org/reps/rep-2001.html#kilted-kaiju-may-2025-november-2026>`__ and ``rosdistro``.
+        No pull requests for any ``kilted`` branch or targeting ``kilted/distribution.yaml`` in ``rosdistro`` repo will be merged.
+
+    Fri. May 23, 2024 - General Availability
+        Release announcement.
+        `ROS 2 desktop packages <https://www.ros.org/reps/rep-2001.html#kilted-kaiju-may-2025-november-2026>`__ source freeze is lifted and ``rosdistro`` is reopened for Kilted pull requests.
+
+.. [1] The ``ros_base`` variant is described in `REP 2001 (ros-base) <https://www.ros.org/reps/rep-2001.html#ros-base>`_.
+.. [2] The ``desktop`` variant is described in `REP 2001 (desktop-variants) <https://www.ros.org/reps/rep-2001.html#desktop-variants>`_.