JBoss have released the final Candidate Release of the JBoss Application Server (JBoss AS 5.0.0.CR2). The next release of JBoss AS 5 is expected to be the final (GA) release.
JBoss 5 is the next generation of the JBoss Application Server build on top of the new JBoss Microcontainer. The JBoss Microcontainer is a lightweight container for managing POJOs, their deployment, configuration and lifecycle. It is a standalone project that replaces the famous JBoss JMX Microkernel of the 3.x and 4.x JBoss series. The Microcontainer integrates nicely with the JBoss framework for Aspect Oriented Programming, JBoss AOP.
This Release Candidate has passed the Java EE 5 TCK and now fully supports all of the features required of a Java EE 5 application server, bringing it in line with other EE 5 compatible application servers such as GlassFish and WebLogic 10.