What happened to iCloud folder sharing coming in iOS 13?

Hi again everyone,
some time ago we discussed about this topic, and someone said that with Yos 13, it will become possible tu use Icloud as, For examele, Dropbox, and so, to be able to shcare with other icloud users folders. AS I didn't listen anything about this matter, after updates to Yos 13 and 13.1, I would like to know if sometihg has changed or not. IN adition, I would like to ask whenn would be launched the new Mac cAtalina.
Many thanks and have a nice Sunday.
María