Simplified tools and common features.
The Home screen is where Motion-4 (M⁴) starts up on each new run, and you'll probably find is one of your most visited screens in M⁴. Small versions of tools like the Ease Graph, Anchor and Ease Sliders are always quickly accessible — when the full versions, or more complex options aren't needed.
Additionally, the Home screen is home for the new Workflow tools which offer more in-depth abilities and even GUIs that help with each individual Workflow. You can Pin your favorite tools for quick access also onto the Home screen and have constant access (as you will to these Tools on every screen) to the simplified Focus tools and Swatch library, and Easing library.