iMovie gains haptic feedback on Apple's new Force Touch trackpads: "Haptic feedback is enabled in three situations: when dragging a video clip to its maximum length, snapping a title to the beginning or end of a video clip, and when snapping to alignment guides during video cropping. The changes, which were first noticed by Final Cut blogger Alex Gollner, came as part of the iMovie 10.0.7 update released earlier in March."