See if there are no changes/ vacancies in the upgradation subject i.e., for your case Computer Science, then no list will suddenly come out. This can be the primary reason. But still if you want to know about the reason, then contacting the college authority will be the best choice as you will get the details and the specific reason about it from there.

For more information regarding CSE as a career, you can consider the link below:

https://www.careers360.com/courses/computer-science-engineering-course

I hope this helps. Wish you a great day!