The latest release of the New Relic Java agent provides new metrics to help users gain deeper insight into their JVM and application server performance, enabling them to solve a multitude of performance problems. These new metrics include loaded and unloaded class count, active thread count, thread pool metrics, session metrics, and transaction metrics, which can be used to identify issues such as excessive memory usage, out-of-memory errors, or slow thread pools, and to optimize configuration properties like session timeouts and maximum thread counts. The new metrics are accessible under various tabs in the New Relic interface, including Memory, Threads, HTTP Sessions, and App Server Transaction, and require users to update to the latest Java agent and enable JMX on their application server.