Currently there is no robust version control and notification mechanism which permits the Admin to choose who is forced to receive and complete updated online course content, and the notifications they will receive. Please work on this with the participation of the user community.
We need this as well. When we update SCORM lessons users aren't able to access the most recent version if they were already In Progress or Complete for that lesson. We need to be able to reset progress for specific lessons in a course when that content is updated.
We'd love to see the option to force a re-enroll in the course if the course is versioned. This is a great idea!