Here are a couple of links to YouTube videos from two of my favorite Google reviewers going over the added features in the March update.
https://youtu.be/8Hy0avBfCeI
https://youtu.be/eOLZW2Wqh_s
https://youtu.be/8Hy0avBfCeI
https://youtu.be/eOLZW2Wqh_s