Apple has posted DVD Studio Pro 4.0.3, an update to the professional toolset for producing DVDs. The company said that the update brings compliance for the 1.0 HD DVD Video standard content specification to both Mac OS X Tiger and Panther users. "Users with DVD Studio Pro 4.0 or later need to install this update to ensure their projects are compliant with the 1.0 HD DVD Video standard content specification." The 6.8MB update is available via the Web or Software Update.