If you are speaking about EdTEch 502, we are opening another section, and it will be available for enrollment next week. If you get on the wait list, you'll be one of the first notified that the new section is open.
If you are speaking about another course, you can choose to get on the waitlist now to see if you are moved in before classes begin. There is always a lot of movement in classes as we get closer to the start date.
Or, you can certainly choose a different class that is open and then revise your program plan and send it to me so I can make sure you are still good-to-go.