Add Joined devices dialogue and version notices

updates.md

@@ -12,6 +12,14 @@ Earlier releases remain available in the 1.0 release history, the 1.0 preview hi
 
 ## Unreleased
 
+### Synchronisation
+
+- We can review participating devices through **Joined devices** in Remote Configuration, the command palette, or a version Notice.
+    - Our device appears first, with its lockout state. Other records show the platform, plug-in version, app version, and last recorded connection time when available.
+    - Advisory Notices help us find devices which last reported newer or older plug-in versions.
+- We can forget records belonging to lost or retired devices while preserving the remote lock state and other devices.
+    - Forgetting a record does not delete Vault files or revoke credentials. A returning device can register again on an unlocked remote.
+
 ## 1.0.39
 
 20th October, 2026