The whole documentation about update/upgrade/rollback. Backup and Restore. And possibly compatibility of clients and server versions in regards to version differences between minor and major releases. Basically the three points from half a year ago, still stand. Also another thing I can not find is "How is wg being (re-)configured?". What I mean is the runtime configuration changes. Will running connections suffer from reconfiguration or will it execute all the right commands to add/remove an interface, add/remove nodes, add/remove routes, etc. ie. Is there a network disruption on config update?