Red Hat's latest open source application server WildFly 8 (nee JBoss AS) is now released. The key features are:
- Java EE 7 compliant
- New highly performant web server (Undertow)
- HTTP Upgrade allows to reduce to only 2 ports
- Role based access control and audit logging
- Automated patching
You can read more about the release at:
http://wildfly.org/news/2014/02/11/WildFly8-Final-Released/
And a complete list of resources are available at: