As hinted at during last week’s event, Apple has released iMovie 2.2, an update designed primarily to bring 4K video editing support for the new iPhone 6s, iPhone 6s Plus, and iPad Pro. In addition to 4K video, the update also introduces support for 1080p video at 60fps and adds 3D Touch interactions for the new iPhone models. Several iPad enhancements have also been added, including a new user interface design for the iPad Pro, including a…