Since Neo4j version 3.0, users can extend its capabilities with user-defined procedures, functions, and aggregate functions. The APOC library was introduced during the 3.0 milestone phase and has since grown to feature over 300 procedures and functions. New features have been added in recent releases, including automated index updates, support for mixed content, and improved performance of the `apoc.periodic.iterate` procedure. Additionally, new contributions from developers such as Stefan Armbruster, Andrew Bowman, Florent Biville, Tomaz Bratanic, and Michael Hunger have expanded the library's capabilities, including new functions for data manipulation, graph algorithms, and JSON support. The APOC team has also partnered with Larus BA to improve the library's performance and address open issues. With the release of Neo4j 3.1, users can now enable automated index updates in their manual index definitions, and Michael Hunger has improved the documentation for the library, including independent versions for different Neo4j versions.