What is the 96th amendment to Indian Constitution?

The Ninety Sixth Amendment Act of 2011 substituted “Odia” for “Odiya”. Consequently, the “Oriya” language in the Eighth Schedule shall be pronounced as “Odia”. 

Further Reading :

• Schedules of Indian Constitution
• Schedules of the Indian Constitution

To read more about the 8th Schedule of the Indian Constitution, check the linked article.