Update Deprecations.md

content/CORE/GettingStarted/Deprecations.md

@@ -19,3 +19,15 @@ Begin planning migrations from these features immediately and note the TrueNAS u
 SAS Multipath is supported *as-is* and receives no further maintenance updates.
 While multipath situations might be detected and be generally functional in TrueNAS CORE, there is a possibility this is not available in a future TrueNAS CORE major version.
 Users should avoid creating and managing SAS multipath scenarios with TrueNAS.
+
+## Virtualization
+
+The Plugins, Jails, and Virtual Machines features are untested and provided without support to the TrueNAS Community.
+Users with a critical need to use containers or virtualization solutions in production should migrate to the tested and supported virtualization features available in [TrueNAS SCALE](https://www.truenas.com/download-truenas-scale/).
+[TrueNAS Enterprise customers](https://www.truenas.com/truenas-enterprise/) can contact iXsystems to schedule a TrueNAS SCALE deployment.
+See [CORE to SCALE Migrations](https://www.truenas.com/docs/scale/gettingstarted/migrate/) for more information.
+
+## Web Shell
+
+The web UI **Shell** is removed in CORE 13.3.
+Users can continue to access the shell using [SSH]({{< relref "ConfiguringSSH.md" >}}) or a physical system connection with serial cable or other direct method.