Pro Applications Update 2008-01

Apple released a rather large (63.7 MB) Pro applications update:

This update improves reliability for Apple's professional applications and is recommended for all users of Final Cut Studio, Final Cut Server, Logic Studio, and Shake.
Pro Applications Update 2008-01 is a revision to Final Cut Studio 2.0. This update includes Final Cut Pro 6.0.3, Compressor 3.0.3, which addresses specific customer issues, installation issues, compatibility updates, general performance issues and improves overall stability.
This update is recommended for all users of Final Cut Studio 2.0 and later.

Apple provides a surprisingly detailled release note regarding changes in this update:

Pro Applications Update 2008-01 is a revision to Final Cut Studio 2.0 focused on new camera support. This update includes Final Cut Pro 6.0.3, Compressor 3.0.3, Apple HDV Codec 1.4, PluginManager 1.7.3, and a cumulative update of shared technology components from Pro Applications Update 2007-01 forward.

Additional information at the following webpage: http://www.apple.com/support/releasenotes/en/Final_Cut_Studio_2.0_rn/