Update 5.11-release-notes.md

doc/release-notes/5.11-release-notes.md

@@ -18,6 +18,18 @@ In the "Notes for Dataverse Installation Administrators" section, we have provid
 
 See also Issue #8191 and PR #8308.
 
+### Legacy Templates Issue
+
+When custom license functionality was added, dataverses that had older legacy templates as their default template would not allow the creation of a new dataset (500 error).
+
+This occurred because those legacy templates did not have an associated termsofuseandaccess linked to them. 
+
+In this release, we run a script that creates a default empty termsofuseandaccess for each of these templates and links them.
+
+Note the termsofuseandaccess that are created this way default to using the license with id=1 (cc0) and the fileaccessrequest to false. 
+
+See #8599.
+
 ### Muting Notifications
 
 Users can control which notifications they receive if the system is [configured to allow this](https://guides.dataverse.org/en/5.11/admin/user-administration.html#letting-users-manage-receiving-notifications). See #7492.