nazrul writes: "GlassFish 3.1 shipped today! It brings together the benefits of GlassFish v3 and GlassFish v2.x with lots of net new features. It is based on world’s first implementation of Java EE 6 with an OSGi based flexible, lightweight, extensible platform. It requires a small memory footprint. It is fully featured with production-ready features such as clustering and high availability, provides optimized runtime performance and ready for enterprise deployments."