The GraphAcademy site has introduced a new certification exam for Neo4j, focusing on features in release 4.0, including Cypher changes and improvements, multi-database management, role-based access control, and fabric. The exam consists of 30 questions that must be answered within 45 minutes, with a minimum score of 80% required to pass. To prepare for the exam, users can utilize various resources such as online courses and Neo4j manuals, which cover topics like Cypher subqueries, administration, and fabric configuration. The certification is free and can be taken multiple times within a 24-hour period until passing is achieved.