iOS
If you used collections and favorites in your library, they have now been upgraded to Spaces, which you'll find in your Library. Spaces allow you to do the same things as collections and favorites and even more, like adding notes to titles or sharing them with others.
You will no longer see favorites and collections as features in your library.
Check out these articles to learn how you can use Spaces to save, organize and share your content.
Android
If you used collections and favorites in your library, they have now been upgraded to Spaces, which you'll find in your Library. Spaces allow you to do the same things as collections and favorites and even more, like adding notes to titles or sharing them with others.
You will no longer see favorites and collections as features in your library.
Check out these articles to learn how you can use Spaces to save, organize and share your content.