I'm now opening up beta testing for Aperture Exporter with faces support. For sure this was the most requested feature request and many people were waiting for a version that supported faces.
How it works:
AE reads the Aperture database in order to determine which images have identified faces. Those images receive keywords that indicate the faces in the image. The format of the keyword is:
Face - [name]
AE will try to automatically determine the location of your Aperture library and that code looks solid. However, if it doesn't get the right library you can tell AE where it is really located.
Since this is a beta version there may still be bugs in the code. Please don't hold back on letting us know of anything that goes wrong.
Users with license keys have unrestricted access to the new faces feature. Unregistered users will find that AE is restricted to tagging up to 5 faces in your images.
Resume Mode Notes:
This beta also includes an export resume mode. When you begin an export, AE will check the destination folder to see if it contains any subfolders. If detected, it prompts for Resume or Normal Mode.
In Resume mode, existing folders in the export hierarchy are skipped. The new code deletes the last folder being processed when an export is cancelled, preventing incomplete folder contents.