Tonight, Apple released iPhoto update 7.1.5. According to Apple, this update "Improves the printing quality of books, cards and calendars ordered via the iPhoto printing service." A welcome change for many iPhoto users who use Apple's print services. This update is reminiscent of the Aperture update that showed up last week.
You can update iPhoto by opening Software Update (Apple menu > Software Update), or by downloading the installer package from the Apple website.
Thanks for the Tips, Tony and others!