Instructor should be able to control automatic content update notifications
Teacher should be able to disable automatic content changes notification that are sent to students. When an instructor is doing a lot of juggling around with the course, changing things back and forth, trying different ways to present things, it could easily generate a lot of useless update information and cause students to be annoyed by the emails.
YES! This is big source of irritation and confusion for students. The teacher should be able to "turn off" any notifications for students that they don't want seen, while keeping all teacher notifications on