According to the release notes it does this:
Pro Application Update 2007-01 includes improvements to underlying frameworks and shared components for the updated Final Cut Studio 2 applications.
Pro Application Update 2007-01 updates the following components
Apple ProRes 422:
Delivers improved encoding performance for Power Mac G5 computers.
ProAppsEffects:
Delivers filter improvements for Motion 3.0 and Final Cut Pro 6.0 customers.
PluginManager, FxPlug, ProFX, and FxPlugWrapper:
These shared components deliver updates to Effects Support, 3D Support, and Versioning Support.
Helium.framework:
Delivers improvements for SmoothCam. This update is required for customers using Motion 3.0 and Final Cut Pro 6.0.
Requirements for this update:
Mac OS X 10.4.9 or later
QuickTime 7.1.6 or later
Michael Horton
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