I’ve just pulled the trigger on this option in admin,
edit history visible to public
Allow everyone to see previous versions of an edited post. When disabled, only staff members can view.
However, the existing post revisions are still there over an hour later. Will this go back and prevent existing changes from being seen, or does it only effect future posts?
EDIT - Removed reference to @mcwumbly 's feature which deletes certain edits. That appeared to work within moments/refresh.