Aperture 3.0.2
This update improves overall stability and fixes issues in a number of areas. The key areas addressed include:
Upgrading Aperture 1.x and 2.x libraries
Importing libraries from iPhoto or from earlier versions of Aperture
Importing hierarchical folders of photos into a library
Adding names and confirming matches in Faces
Reordering snapshots on the Faces corkboard
Creating and saving print presets
Duplicating metadata presets
Adjustments
Navigation of photos in the Viewer using scrolling
Importing ratings, color labels and GPS input from XMP sidecar files
IPTC metadata compatibility
Deleting photos when emptying the Aperture Trash
Exporting versions and libraries
The update is recommended for all users of Aperture 3.
For detailed knowledge on that update, please visit that website: http://support.apple.com/kb/TS2518
Orginal post by Mike