Apple has released a series of updates for all its DVD Studio Pro 4 applications: DVD Studio Pro, Compressor 2, Apple Qmaster 2 and DVD Player 4.

The new DVD Studio Pro 4.0.3 updates compliance for the 1.0 HD DVD Video standard content specification. Apple states that 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 software requires Mac OS X 10.3.9 or later, DVD Studio Pro 4.0 and QuickTime 7.0 or later.

The 6.8MB download is available now from Apple's support website.