DOC-2312: update services for tinymcespellchecker for TinyMCE 7.7.0.

Author: kemister85

modules/ROOT/pages/7.7.0-release-notes.adoc

@@ -13,11 +13,45 @@ include::partial$misc/admon-releasenotes-for-stable.adoc[]
 
 {productname} {release-version} was released for {enterpriseversion} and {cloudname} on <weekday>, <month> <DD>^<st|nd|rd|th>^, <YYYY>. These release notes provide an overview of the changes for {productname} {release-version}, including:
 
+* xref:accompanying-premium-self-hosted-server-side-component-changes[Accompanying Premium self-hosted server-side component changes]
 * xref:accompanying-premium-plugin-changes[Accompanying Premium plugin changes]
 * xref:improvements[Improvements]
 * xref:additions[Additions]
 * xref:bug-fixes[Bug fixes]
 
+[[accompanying-premium-self-hosted-server-side-component-changes]]
+== Accompanying Premium self-hosted server-side component changes
+
+The {productname} {release-version} release includes accompanying changes affecting the {productname} **self-hosted** services for the following plugin:
+
+* **Spell Checker** plugin `tinymcespellchecker`.
+
+For information on:
+
+* The **Spell Checker** plugin, see: xref:introduction-to-tiny-spellchecker.adoc[Spell Checker plugin].
+* Deploying the **server-side** components, see: xref:introduction-to-premium-selfhosted-services.adoc[Server-side component installation].
+
+The Java server-side component has been updated to the following version:
+
+* `ephox-spelling.war`: 2.128.3
+
+=== Updating the self-hosted server-side components
+
+The new versions of the server-side services provide updates for the Java-based server-side components. To deploy the updated version of the server-side components:
+
+. Update your Java Application Server to the minimum required version:
+
+include::partial$misc/supported-application-servers.adoc[]
+
+. Replace the existing server-side `.war` files with the `.war` files bundled with {productname} {release-version} or later.
+
+For information on:
+
+* Deploying the server-side components, see: xref:introduction-to-premium-selfhosted-services.adoc[Server-side component installation].
+* Deploying the server-side components using Docker, see: xref:bundle-intro-setup.adoc[Containerized service deployments].
+
+include::partial$misc/admon-no-functionality-changes-in-updated-server-side-components.adoc[]
+
 
 [[accompanying-premium-plugin-changes]]
 == Accompanying Premium plugin changes