diff --git a/docs/sections/guides/infra_guides/oom_infra_base_config_setup.rst b/docs/sections/guides/infra_guides/oom_infra_base_config_setup.rst
index f25f4e7..db8d37d 100644
--- a/docs/sections/guides/infra_guides/oom_infra_base_config_setup.rst
+++ b/docs/sections/guides/infra_guides/oom_infra_base_config_setup.rst
@@ -65,14 +65,14 @@
 ::
 
   NAME             STATUS   ROLES               AGE     VERSION
-  onap-control-1   Ready    controlplane,etcd   3h53m   v1.27.5
-  onap-control-2   Ready    controlplane,etcd   3h53m   v1.27.5
-  onap-k8s-1       Ready    worker              3h53m   v1.27.5
-  onap-k8s-2       Ready    worker              3h53m   v1.27.5
-  onap-k8s-3       Ready    worker              3h53m   v1.27.5
-  onap-k8s-4       Ready    worker              3h53m   v1.27.5
-  onap-k8s-5       Ready    worker              3h53m   v1.27.5
-  onap-k8s-6       Ready    worker              3h53m   v1.27.5
+  onap-control-1   Ready    controlplane,etcd   3h53m   v1.28.6
+  onap-control-2   Ready    controlplane,etcd   3h53m   v1.28.6
+  onap-k8s-1       Ready    worker              3h53m   v1.28.6
+  onap-k8s-2       Ready    worker              3h53m   v1.28.6
+  onap-k8s-3       Ready    worker              3h53m   v1.28.6
+  onap-k8s-4       Ready    worker              3h53m   v1.28.6
+  onap-k8s-5       Ready    worker              3h53m   v1.28.6
+  onap-k8s-6       Ready    worker              3h53m   v1.28.6
 
 
 Install & configure helm
@@ -249,8 +249,16 @@
 
 - Create an override for istiod (e.g. istiod.yaml) to add the oauth2-proxy as external
   authentication provider and apply some specific config settings
+  Be aware, that from Istio version 1.21.0 the format of the values.yaml changes.
+  Additionally a new feature (Native Sidecars) can be enabled, if it is enabled in
+  Kubernetes (version > 1.28)
 
-    .. collapse:: istiod.yaml
+    .. collapse:: istiod.yaml (version => 1.21)
+
+      .. include:: ../../resources/yaml/istiod-1_21.yaml
+         :code: yaml
+
+    .. collapse:: istiod.yaml (version < 1.21)
 
       .. include:: ../../resources/yaml/istiod.yaml
          :code: yaml
diff --git a/docs/sections/guides/infra_guides/oom_infra_deployment_requirements.rst b/docs/sections/guides/infra_guides/oom_infra_deployment_requirements.rst
index 4b2a752..1137723 100644
--- a/docs/sections/guides/infra_guides/oom_infra_deployment_requirements.rst
+++ b/docs/sections/guides/infra_guides/oom_infra_deployment_requirements.rst
@@ -50,7 +50,7 @@
   ==============     ===========  =======  ========  ========  =============  ========
   London             1.23.8       3.8.2    1.23.x    20.10.x   1.12.2         0.35.0
   Montreal           1.27.5       3.12.3   1.27.x    20.10.x   1.13.2         0.36.1
-  New Delhi          1.27.5       3.12.3   1.27.x    20.10.x   1.13.2         0.40.0
+  New Delhi          1.28.6       3.13.1   1.28.x    20.10.x   1.14.4         0.41.0
   ==============     ===========  =======  ========  ========  =============  ========
 
 .. table:: OOM Software Requirements (production)
@@ -60,7 +60,7 @@
   ==============     ======  ============ ==============
   London             1.17.2  v0.6.2       19.0.3-legacy
   Montreal           1.19.3  v1.0.0       19.0.3-legacy
-  New Delhi          1.19.3  v1.0.0       22.0.4
+  New Delhi          1.21.0  v1.0.0       22.0.4
   ==============     ======  ============ ==============
 
 .. table:: OOM Software Requirements (optional)
@@ -70,5 +70,5 @@
   ==============     ================= ========== =================
   London             45.x              1.6.1
   Montreal           45.x              1.10.2     0.23.1
-  New Delhi          45.x              1.11.0     0.24.0
+  New Delhi          45.x              1.16.0     0.28.1
   ==============     ================= ========== =================
diff --git a/docs/sections/release_notes/release-notes-montreal.rst b/docs/sections/release_notes/release-notes-montreal.rst
new file mode 100644
index 0000000..aa0b84a
--- /dev/null
+++ b/docs/sections/release_notes/release-notes-montreal.rst
@@ -0,0 +1,131 @@
+.. This work is licensed under a Creative Commons Attribution 4.0
+   International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. (c) ONAP Project and its contributors
+.. _release_notes_montreal:
+
+:orphan:
+
+*************************************
+ONAP Operations Manager Release Notes
+*************************************
+
+Previous Release Notes
+======================
+
+- :ref:`London <release_notes_london>`
+- :ref:`Kohn <release_notes_kohn>`
+- :ref:`Jakarta <release_notes_jakarta>`
+- :ref:`Istanbul <release_notes_istanbul>`
+- :ref:`Honolulu <release_notes_honolulu>`
+- :ref:`Guilin <release_notes_guilin>`
+- :ref:`Frankfurt <release_notes_frankfurt>`
+- :ref:`El Alto <release_notes_elalto>`
+- :ref:`Dublin <release_notes_dublin>`
+- :ref:`Casablanca <release_notes_casablanca>`
+- :ref:`Beijing <release_notes_beijing>`
+- :ref:`Amsterdam <release_notes_amsterdam>`
+
+Abstract
+========
+
+This document provides the release notes for the Montreal release.
+
+Summary
+=======
+
+
+
+Release Data
+============
+
++--------------------------------------+--------------------------------------+
+| **Project**                          | OOM                                  |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+| **Docker images**                    | N/A                                  |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+| **Release designation**              | Montreal                             |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+| **Release date**                     | 2023/12/14                           |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+
+New features
+------------
+
+* Introduction of "Production" ONAP setup, including:
+
+  * Besides the Istio Ingress APIs now the support for `Gateway-API`_
+    is added to the templates, which includes:
+
+    * TCP Routes
+    * UDP Routes
+
+* Update of Helmcharts to use common templates and practices
+* Default support for Cassandra 4.x using k8ssandra-operator
+* Default support for MariaDB 11.x using mariadb-operator
+
+**Bug fixes**
+
+A list of issues resolved in this release can be found here:
+https://jira.onap.org/projects/OOM/versions/11501
+
+**Known Issues**
+
+* Components not working under ServiceMesh
+
+  * SO Monitor UI
+  * Policy UI
+
+Deliverables
+------------
+
+Software Deliverables
+~~~~~~~~~~~~~~~~~~~~~
+
+OOM provides `Helm charts <https://nexus3.onap.org/service/rest/repository/browse/onap-helm-release/>`_
+
+Documentation Deliverables
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- :ref:`Project Description <oom_project_description>` - a guide for developers of OOM
+- :ref:`oom_dev_guide` - a guide for developers of OOM
+- :ref:`oom_infra_guide` - a guide for those setting up the environments that OOM will use
+- :ref:`oom_deploy_guide` - a guide for those deploying OOM on an existing cloud
+- :ref:`oom_user_guide` - a guide for operators of an OOM instance
+- :ref:`oom_access_info_guide` - a guide for operators who require access to OOM applications
+
+Known Limitations, Issues and Workarounds
+=========================================
+
+Known Vulnerabilities
+---------------------
+
+
+Workarounds
+-----------
+
+Security Notes
+--------------
+
+**Fixed Security Issues**
+
+References
+==========
+
+For more information on the ONAP Istanbul release, please see:
+
+#. `ONAP Home Page`_
+#. `ONAP Documentation`_
+#. `ONAP Release Downloads`_
+#. `ONAP Wiki Page`_
+
+
+.. _`ONAP Home Page`: https://www.onap.org
+.. _`ONAP Wiki Page`: https://wiki.onap.org
+.. _`ONAP Documentation`: https://docs.onap.org
+.. _`ONAP Release Downloads`: https://git.onap.org
+.. _`Gateway-API`: https://istio.io/latest/docs/tasks/traffic-management/ingress/gateway-api/
diff --git a/docs/sections/release_notes/release-notes.rst b/docs/sections/release_notes/release-notes.rst
index 0df9483..879f16f 100644
--- a/docs/sections/release_notes/release-notes.rst
+++ b/docs/sections/release_notes/release-notes.rst
@@ -11,6 +11,7 @@
 Previous Release Notes
 ======================
 
+- :ref:`Montreal <release_notes_montreal>`
 - :ref:`London <release_notes_london>`
 - :ref:`Kohn <release_notes_kohn>`
 - :ref:`Jakarta <release_notes_jakarta>`
@@ -27,7 +28,7 @@
 Abstract
 ========
 
-This document provides the release notes for the Montreal release.
+This document provides the release notes for the New Delhi release.
 
 Summary
 =======
@@ -44,39 +45,41 @@
 | **Docker images**                    | N/A                                  |
 |                                      |                                      |
 +--------------------------------------+--------------------------------------+
-| **Release designation**              | Montreal                             |
+| **Release designation**              | New Delhi                            |
 |                                      |                                      |
 +--------------------------------------+--------------------------------------+
-| **Release date**                     | 2023/12/xx                           |
+| **Release date**                     | 2024/06/13                           |
 |                                      |                                      |
 +--------------------------------------+--------------------------------------+
 
 New features
 ------------
 
-* Introduction of "Production" ONAP setup, including:
+* authentication (14.0.0) - add configurable Keycloak Realm and enable Ingress
+  Interface Authentication and Authorization
+* Update the helm common templates (13.2.0) to:
 
-  * Besides the Istio Ingress APIs now the support for `Gateway-API`_
-    is added to the templates, which includes:
+  * Support the latest Database Operators:
 
-    * TCP Routes
-    * UDP Routes
+    * MariaDB-Operator (0.28.1)
+    * K8ssandra-Operator (v0.16.0)
+    * Postgres-Operator (CrunchyData) (5.5.0)
 
-* Update of Helmcharts to use common templates and practices
-* Default support for Cassandra 4.x using k8ssandra-operator
-* Default support for MariaDB 11.x using mariadb-operator
+* cassandra (13.1.0) - support for new K8ssandra-Operator
+* mariadb-galera (13.1.0) - support for new MariaDB-Operator
+* mongodb (14.12.3) - update to latest bitnami chart version
+* postgres (13.1.0) - support for new Postgres-Operator
+* postgres-init (13.0.1) - support for new Postgres-Operator
+* readinessCheck (13.1.0) - added check for "Service" readiness
+* serviceAccount (13.0.1) - add default role creation
 
 **Bug fixes**
 
 A list of issues resolved in this release can be found here:
-https://jira.onap.org/projects/OOM/versions/11501
+https://jira.onap.org/projects/OOM/versions/11502
 
 **Known Issues**
 
-* Components not working under ServiceMesh
-
-  * SO Monitor UI
-  * Policy UI
 
 Deliverables
 ------------
diff --git a/docs/sections/resources/yaml/istiod-1_21.yaml b/docs/sections/resources/yaml/istiod-1_21.yaml
new file mode 100644
index 0000000..d85ec11
--- /dev/null
+++ b/docs/sections/resources/yaml/istiod-1_21.yaml
@@ -0,0 +1,21 @@
+defaults:
+  #global:
+    #logging:
+    #  level: "default:debug"
+  meshConfig:
+    rootNamespace: istio-config
+    # Controls if sidecar is injected at the front of the container list and blocks the start of the other containers until the proxy is ready
+    holdApplicationUntilProxyStarts: true
+    extensionProviders:
+    - name: oauth2-proxy
+      envoyExtAuthzHttp:
+        service: oauth2-proxy.default.svc.cluster.local
+        port: 80
+        timeout: 1.5s
+        includeHeadersInCheck: ["authorization", "cookie"]
+        headersToUpstreamOnAllow: ["x-forwarded-access-token", "authorization", "path", "x-auth-request-user", "x-auth-request-email", "x-auth-request-access-token"]
+        headersToDownstreamOnDeny: ["content-type", "set-cookie"]
+  pilot:
+    env:
+      PILOT_HTTP10: true
+      ENABLE_NATIVE_SIDECARS: true
\ No newline at end of file