Apple updates Aperture to 2.1.2

Apple has just released update 2.1.2 to its pro photo app, Aperture. The update doesn't seem to do much:

This update improves the printing quality of books ordered through the Aperture printing service.  

But, if it's making the Aperture books any better than the iPhoto books, then it will be welcome: it always stroke me as weird that both pro and consumer software offer the same print products...
The update weighs about 50MB and is available through OSX's Software Update.