iMovie 10 is even better than its predecessor and Studio 300 will have it soon. One improvement is the import process. Selecting the clips you want is easier and you can import audio, pictures, and video at the same time without waiting for all the files to import before you can start working.
The horizontal timeline makes it easier to drag clips on top of another clip for layering or green screen work.
There’s an Adjust Bar located above the Viewer for quickly making changes to your clips. These icons light up so you can tell if it was adjusted or not.
Also, there’s an iMovie Theater for saving your finished movies to your personal iCloud account and can watch them on your Mac or iOS device.
This iMovie update arrives soon in Studio 300. Stay tuned.