MongoDB 2.4 is a stable release that includes key new features, performance improvements, and bug fixes, such as Hash-based Sharding, Capped Arrays, Text Search (Beta), Geospatial Enhancements, Faster Counts, Working Set Analyzer, V8 JavaScript engine, and Security enhancements including Kerberos Authentication and Role Based Access Control. The release was announced on March 19, 2013, following the September 2012 release of MongoDB 2.2. The update contains hundreds of improvements, with a focus on performance, scalability, and security.