The Aperture 1.5.6 Update addresses issues related to performance, improves overall stability, and supports compatibility with Mac OS X 10.5 Leopard. Other specific issues addressed in this release include:

• Resolves some minor compatibility issues with iPhoto 7.1, which organizes images by Event rather than Roll.
• Addresses issues related to metadata and sort order when sharing previews with iLife Media Browser.
• Improves reliability of queries based on Import Session.
• Addresses reliability when recovering an Aperture Library from a Vault.

This update is recommended for all Aperture users.

But still no updates to the print products offered.