This update improves overall stability and fixes a number of other minor issues. The issues addressed include:
- Fixed a problem with incorrect rotation when working with video created by iPhone 3GS
- Resolved instability when adding multiple beat markers in some languages
- Corrected an issue where iMovie could become unresponsive after using fine-tuning controls beyond the stabilized portions of a clip
The update is recommended for all users of iMovie '09.
In the market for an iPhone? Here's a breakdown of all the currently shipping iPhones from Apple.