Yes and some of the data science courses seem to be offered weekly, at minimum monthly. At least the courses I took.
Something that annoys me is courses that are listed in the course list but were once and done and never coming back, or "maybe someday" classes.
To tell you the truth, I find it a great system because it gives me a sense of the time frame I should realistically be completed the course.
Although, at the same time I tend to do deep dives on a course and complete them as fast as possible blowing past the schedule anyways.
If you don't want to subscribe to a self-imposed schedule the audit option basically allows you to learn the material on your own time.