Hi Steven,

There is not a way to have a Program manage the addition of new courses the way you are looking for. If you're just looking for a way to present all of the courses to the users and have new ones appear over time, you can use a Dashboard, similar to what we've done in Totara Academy. To see it in action, go up to the Main Menu here on Community, and click on Academy > Find Learning > Version 11 courses. What we've done is added a tile for each course and when new ones come out, we add them to the dashboard. To help the user track their own status, we've added audiences that are dynamically built based on course completion status, and essentially two different images for the tiles, one that a user who has not completed the course sees and a second one with a green checkmark for when you've completed the course. 

Also, depending on what version you're on, the Version 12 catalogue may present things in a way that is more like what you're looking for. More info on that here in the Course Catalogue course.

You might also want to check with your Totara Partner to see what they recommend, as they know your setup and likely they've run into scenarios like this before.

Cheers!

Wes