Apple is releasing the first public betas for iOS 13.4, macOS 10.15.4, and tvOS 13.4. The update brings new emojis, a new toolbar for the Mail app and the much-requested iCloud Folder Sharing feature.
Icloud folder sharing RSS
Apple's feature page for macOS Catalina sets the availability of folder sharing via iCloud in the spring of 2020. However, a separate page for iOS 13 features indicates it will go live this fall.