Files: Folders in Libraries (Beta), Attach Salesforce Files to Records, and Rename Files from the Related List

We enhanced the files experience to get you more functionality with less friction. Freshen up your libraries by organizing your library files into folders (beta). Use Apex to customize file downloads for security and tracking. Work faster and better in Lightning Experience by attaching and renaming files right from the Files related list.
Files and Files Connect for cloud-based external data sources are available in: Professional, Enterprise, Performance, Unlimited, and Developer Editions

Files Connect for on-premises external data sources is available for an extra cost in the same editions.