How do you get new transitions on imovie?

To get new transitions in iMovie, you can update the app to the latest version to access any new built-in transitions Apple may have added. Additionally, you can create custom transitions by using keyframe animations or by importing video clips with transitions from other video editing software. If you're looking for more options, consider downloading third-party transition packs compatible with iMovie. Always ensure that any additional content adheres to licensing agreements.