diff --git a/doc/release-notes/upgrading.en.rst b/doc/release-notes/upgrading.en.rst
index 2299fa0810d..d60a0e62457 100644
--- a/doc/release-notes/upgrading.en.rst
+++ b/doc/release-notes/upgrading.en.rst
@@ -198,6 +198,9 @@ Removed Plugins
 The following plugins have been removed from the ATS source code in this version of ATS:
 
   * mysql_remap - Dynamic remapping of URLs using data from a MySQL database.
+  * acme
+  * cache_key_genid
+  * fast_cgi
 
 Changes to Features
 ~~~~~~~~~~~~~~~~~~~
@@ -234,6 +237,25 @@ Metrics
   ``proxy.process.cache.volume_X.stripes`` that counts cache stripes
 - All metric names that ended in ``_stat`` have had that suffix dropped and no
   longer end with ``_stat``
+- The metric ``proxy.node.cache.contents.num_doc`` was removed
+- The metric ``proxy.node.config.reconfigure_required`` was renamed to
+  ``proxy.process.proxy.reconfigure_required``
+- The metric ``proxy.node.config.reconfigure_time`` was renamed to
+  ``proxy.process.proxy.reconfigure_time``
+- The metric ``proxy.node.config.restart_required.proxy`` was renamed to
+  ``proxy.process.proxy.restart_required``
+- The metric ``proxy.node.restarts.proxy.cache_ready_time`` was renamed to
+  ``proxy.process.proxy.cache_ready_time``
+- The metric ``proxy.node.restarts.proxy.stop_time`` was renamed to
+  ``proxy.process.proxy.start_time``
+- The following traffic_manager metrics have been removed:
+  - proxy.node.hostname_FQ
+  - proxy.node.hostname
+  - proxy.node.proxy_running
+  - proxy.node.restarts.proxy.restart_count
+  - proxy.node.restarts.proxy.start_time
+  - proxy.node.http.parent_proxy_total_response_bytes
+
 
 Logging
 -------
diff --git a/doc/release-notes/whats-new.en.rst b/doc/release-notes/whats-new.en.rst
index df4a729bb68..aa2fcf49575 100644
--- a/doc/release-notes/whats-new.en.rst
+++ b/doc/release-notes/whats-new.en.rst
@@ -80,6 +80,11 @@ JSON-RPC
 
    Remote clients, like :ref:`traffic_ctl_jsonrpc` have now bi-directional access to the plugin space. For more details check :ref:`jsonrpc_development`.
 
+Replaced autotools build system with cmake
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+See :ref:`admin-installing` for more information
+
 Switch to C++20
 ^^^^^^^^^^^^^^^
 
@@ -110,3 +115,11 @@ HTTP/2
 * Support for HTTP/2 on origin server connections has been added. This is disabled by default. For more details check :ts:cv:`proxy.config.ssl.client.alpn_protocols`
 * Support for CONNECT method has been added.
 * Window size control has been improved. For more details check :ts:cv:`proxy.config.http2.flow_control.policy_in`
+
+HTTP UI Removed
+^^^^^^^^^^^^^^^
+
+The stats and cache inspector pages were unmaintained and removed in this
+release.
+
+