Have you heard that University of Ibadan is trying to change their grading system by returning back to their previous? Where? University of Ibadan management publications either through the social media, newspaper, or even their official website.
University of Ibadan early these semester admitted students in the University according the rule given by the Ministry of Education that is still how it is still done until the school finally publishes its intended grading system. The University of Ibadan Grading System is still same until the school publishes its intended system on their official website, ui.edu.ng and make sure you verify every details before you con core.
If there is any updates, it shall be updated in time.

Interesting facts and figures about the University of Ibadan admission here https://www.nairaland.com/2228034 and https://www.nairaland.com/3678596

Lol. I'm sure you're not in the school.

First it was announced at the matriculation ceremony of the new intakes.

and then was posted on virtually all notice boards in the school. So it's confirmed bro. New grading system is 4.0