The registration for September 2021 is going on. Now there are no updates regarding the next session. You can ask this at the official help desk of the IIT MADRAS as there are no information available on the official website, its hard to conclude any information. Apart from this there is whats app helpline code which you can also use to chat live with the IIT MADRAS representative for that you have to scroll down the website and at the end of the website you will find the details.

For the official website visit the link below:

https://onlinedegree.iitm.ac.in/ (https://onlinedegree.iitm.ac.in/<div><br></div>)

To know more about the course visit the link below:

https://www.careers360.com/university/indian-institute-of-technology-madras/bsc-in-programming-and-data-science-online-course

I hope this answer helps. All the very best for your future endeavors!