This update supports general compatibility issues, and also addresses overall stability and performance. Minor issues addressed include:

• The date range of each event now updates correctly to reflect changes made to photos using the Adjust Time and Date command
• Addresses an issue that could cause the Photos view to scroll incorrectly when Event Titles are displayed
• Fixes a problem that could prevent Ken Burns animations from being applied correctly on photos in a saved Classic slideshow
• Deleting photos from a web album using the contextual menu now removes them from the album without deleting them from the library
• Addresses an issue that could prevent a crop adjustment from being removed from a photo when using the Revert to Original command

The update is recommended for all users of iPhoto '11.