Confluence Cloud today (Oct 12/17), we noticed that when creating a user there are now two options. You can use the "create user" button in the top right (Wow there's actually a button with an actual name not some cryptic symbol). Which will give you this screen:
OR you can use cryptic symbol "+" in the top left, you get a choice to "invite a user" and you get this screen:
IMHO, I would think the first one is for a bulk invite, the other for an individual invite. Why can't there be "Create User - Bulk" and "Create User".
Curious to see what other's experience has been?