Add note about obsolete methods in Settings Dashboards article

Author: sofietoft

15/umbraco-cms/fundamentals/backoffice/settings-dashboards.md

@@ -32,12 +32,16 @@ For more information about Examine Management, see the [Examine Management](../.
 
 <summary>Published Status</summary>
 
-The Published Status dashboard displays the status of your site in the Published Cache Status section alongside the Content and Media nodes value. The Caches section provides three options: Memory Cache, Database Cache, and Internals (NuCache).
+The Published Status dashboard displays the status of your site in the Published Cache Status section alongside the Content and Media nodes value. The Caches section provides three options: Memory Cache, Database Cache, and Internals.
 
 * Memory Cache - Reloads the in-memory cache by entirely reloading it from the database cache. Use it when you think that the memory cache has not been properly refreshed.
 * Database Cache - Rebuilds the database cache that is the content of the `cmsContentNu` table. Use it when reloading the Memory Cache is not enough and you think that the database cache has not been properly generated.
 * Internals - Lets you trigger a NuCache snapshots collection.
 
+{% hint style="info"%}
+As of Umbraco 15 `IPublishedSnapshot`, `IPublishedSnapshotAccessor` & `SnapshotCache` are all obsolete.
+{%endhint%}
+
 </details>
 
 <details>