It’s another iPhoto update.

And man, it’s sorta huge.

On Thursday, Apple released its iPhoto 9.4.2 update. The update, a 759 megabyte download, adds the following fixes and changes:
-Photos now can be added to shared streams or My Photo Stream by dragging them to “Photo Stream” in the source list.

- Multiple email addresses can now be copied and pasted in the “Shared with” field for shared streams.

- When more than five subscribers “Like” a photo in a shared stream, their names are now displayed correctly.

- Contextual menu now includes an Import command to import all the photos contained in a shared photo stream.

- Addresses the reliability of Shared Photo Streams when switching between iPhoto and Aperture with the same library.

-Fixes an issue that could prevent Microsoft Outlook from being used to email photos from within iPhoto.

- Updated national holidays are available for use in printed photo calendars.

- Includes stability improvements.

iPhoto 9.4.2 retails for US$49 as part of iLife ’11 and requires an Intel-based Mac running Mac OS X 10.7.5 or later to install and run.

If you’ve tried the update and noticed any changes, please let us know.