Apple released a “Pro Application Support” update today and called it version 4.01. The extent of the description was:
This update improves general user interface reliability for Apple’s professional applications and is recommended for all users of Final Cut Studio, Final Cut Pro, Motion, Soundtrack Pro, DVD Studio Pro, Aperture, Final Cut Express HD, Soundtrack, Logic Pro and Logic Express.
The update does not require a reboot although closing all applications is recommended.
The update is available through Apple’s automatic software update or as a standalone download of 7.6MB.
Click the picture to see it full size and the applications affected.