Update operator.mdx

Author: JoanCamosTyk

developer-support/release-notes/operator.mdx

@@ -14,6 +14,65 @@ Our minor releases are supported until our next minor comes out.
 
 ---
 
+## 1.4 Release Notes
+
+### 1.4.0 Release Notes
+
+#### Release Date xx April 2026
+
+#### Release Highlights
+
+
+
+For a comprehensive list of changes, please refer to the detailed [changelog](#Changelog-v1.4.0) below.
+
+<Note>
+The initial `Helm chart` for Operator 1.4.0 contained an installation bug. Please ensure you use tyk-charts version [5.2.0](/developer-support/release-notes/helm-chart#5-2-0-release-notes) or later to install Operator 1.4.0.
+</Note>
+
+#### Breaking Changes
+This release has no breaking changes.
+
+#### Dependencies
+##### 3rd Party Dependencies & Tools
+
+| Third Party Dependency                                     | Tested Versions        | Compatible Versions    | Comments | 
+| :---------------------------------------------------------- | :---------------------- | :---------------------- | :-------- | 
+| [Kubernetes](https://kubernetes.io)                        | 1.28.x to 1.32.x       | 1.19.x to 1.32.x       |          | 
+
+Given the time difference between your upgrade and the release of this version, we recommend customers verify the ongoing support of third-party dependencies they install, as their status may have changed since the release.
+
+#### Deprecations
+There are no deprecations in this release.
+
+#### Upgrade instructions
+
+Go to the [Upgrading Tyk Operator](/tyk-stack/tyk-operator/installing-tyk-operator) section for detailed upgrade instructions.
+
+
+#### Downloads
+- [Docker image v1.4.0](https://hub.docker.com/r/tykio/tyk-operator/tags?page=&page_size=&ordering=&name=v1.4.0)
+  - ```bash
+    docker pull tykio/tyk-operator:v1.4.0
+    ```
+- Helm chart
+  - [tyk-charts v5.2.0](/developer-support/release-notes/helm-chart#520-release-notes)
+
+#### Changelog
+<a id="Changelog-v1.4.0" data-scroll-offset></a>
+
+##### Added
+
+<AccordionGroup>
+
+<Accordion title=''>
+
+</Accordion>
+
+</AccordionGroup>
+
+
+
 ## 1.3 Release Notes
 
 ### 1.3.0 Release Notes
@@ -56,7 +115,7 @@ Go to the [Upgrading Tyk Operator](/tyk-stack/tyk-operator/installing-tyk-operat
     docker pull tykio/tyk-operator:v1.3.0
     ```
 - Helm chart
-  - [tyk-charts v5.1.0](/developer-support/release-notes/helm-chart#500-release-notes)
+  - [tyk-charts v5.1.0](/developer-support/release-notes/helm-chart#510-release-notes)
 
 #### Changelog
 <a id="Changelog-v1.3.0" data-scroll-offset></a>