When using the real-time collaboration each user is signified by a different color. Sort of like Google Docs and Microsoft Office. The new feature works on the Mac, iOS and the web, allows real time edits and has public and private mode.
Apple will release free iWork updates including this real-time collaboration feature on September 13th for iOS and on September 20th for macOS Sierra.
Click here to catch all the latest news from Apple's "See You" event.