The modern experience for SharePoint announced in the Future of SharePoint Event will be starting to roll out to first release customers during in First week of August. Microsoft also has provisioned a method to get early preview of the modern list experience even before the First Release roll out by adding TryNewExperience=true query string to the list URL as specified in the article https://network.office.com/t5/Blogs/Modern-SharePoint-lists-are-here-Including-integration-with/ba-p/3027 .
The new UI for list is clean and has command bar instead of ribbons.
Clicking the information icon at the top right displays the information panel which lists the recent activities that happened on the list.
The information panel for a selected list item shows the list properties, recent activities and sharing information.
Properties including attachments can be edited in the information panel
Bulk editing of list is made easy with the Quick edit option
Modifying List and Views
New columns can be easily added to the list by clicking the + icon
Columns can be renamed, reordered, sorted and filtered from the column context menu
A flow can be created by clicking the Flow menu from the top and selecting Add a flow
Selecting a flow template would take you to flow designer with the list context.