Share files more easily with non-Google accounts in Drive Beta - nice feature coming soon to collaborate with non-Google users | Moodle and Web 2.0 | Scoop.it
From gsuiteupdates.googleblog.com - December 21, 2018 3:34 AM
Soon, people without Google accounts will be able to view, comment, suggest edits to, and directly edit Google Docs, Sheets, and Slide

Via Tom D'Amico (@TDOttawa)