Upgrade guide for RavenDB Persistence Upgrade from 9 to 10 (#7781)

* add links to menu and create ravendb upgrade page 9-10

* typo fix - copy paste error

* upgrade guide text

* remove extra space

* Tweaks

* Update RavenDB upgrade documentation

* Update persistence/upgrades/ravendb-9to10.md

---------

Co-authored-by: Daniel Marbach <[email protected]>

Author: soujay

menu/menu.yaml

@@ -1160,6 +1160,10 @@
         Title: Version 4 to 5
     - Title: RavenDB
       Articles:
+      - Url: persistence/upgrades/ravendb-9to10
+        Title: Version 9 to 10
+      - Url: persistence/upgrades/ravendb-7to8
+        Title: Version 7 to 8
       - Url: persistence/upgrades/ravendb-6to7
         Title: Version 6 to 7
       - Url: persistence/upgrades/ravendb-6.2to6.3

persistence/upgrades/ravendb-9to10.md

@@ -0,0 +1,21 @@
+---
+title: RavenDB Persistence Upgrade from 9 to 10
+summary: Migration instructions on how to upgrade NServiceBus.RavenDB 9 to 10
+component: Raven
+related:
+- persistence/ravendb
+reviewed: 2025-08-25
+isUpgradeGuide: true
+upgradeGuideCoreVersions:
+ - 9
+---
+
+## RavenDB Client Upgrade
+
+NServiceBus.RavenDB version 10 introduces support for [RavenDB.Client 6.2.9 or higher](https://www.nuget.org/packages/RavenDB.Client).
+
+RavenDB clients are forward-compatible starting with version 4.2, meaning a newer client can connect to a server of the same or higher version. However, if your servers are running a version prior to 6, upgrading the client requires extra care.
+
+In this case, review both the [RavenDB client breaking changes](https://docs.ravendb.net/6.0/migration/client-api/client-breaking-changes/) and the [RavenDB server breaking changes](https://docs.ravendb.net/6.0/migration/server/server-breaking-changes/) to ensure compatibility before upgrading.
+
+If your servers are already on RavenDB 6 or higher, you can safely upgrade the client library after consulting the [RavenDB client breaking changes](https://docs.ravendb.net/6.0/migration/client-api/client-breaking-changes/) without requiring immediate server changes.