Following earlier releases of iOS 5, OS X 10.7.2 and iCloud, Apple has also pushed out iPhoto 9.2, bringing iCloud and Photo Stream compatibility as well as a number of improvements and bug fixes.
From the release notes:
iPhoto 9.2 supports compatibility with iCloud and iOS 5. This update also addresses minor stability, performance and compatibility issues, including:
– Left and right swipe gestures can now be used to navigate between photos in Magnify (1-up) view
– Previously imported photos are now displayed in a separate section of the Import window
– Book/calendar themes and card categories can now be selected using a pop-up menu in the carousel view
– Resolves an issue that could cause some pages of books to print incorrectly
– Rebuilding a library now correctly preserves saved slideshows and booksThe update is recommended for all users of iPhoto ’11.
The update is available immediately through Software Update on your Mac.