The WebDT Content Manager 4.0 SP1 has been released this week.
SP1 has improved some automatically retrieving system function and more option for security checking at both server and player sides. There is a patch for Multi Screen appliances as well which provides more complete functions for multiscreen support and the Multiscreen layout design tool.
Please login to Client Zone or contact your DT Research technical support staff to get the latest WCM 4.0 SP1 and related info.