JBoss 7.1.1 comes with JBossWS-cxf-4.0.2.GA bundled. But if you plan to deploy a Spring based application, containing some web services, be sure to update to JBoss-cxf-4.1.1.Final, otherwise you will incur in the following error:

Caused by: java.lang.NoClassDefFoundError: org/springframework/beans/BeansException
 at org.jboss.wsf.stack.cxf.client.configuration.JBossWSBusFactory.getSpringBusFactory(JBossWSBus

That’s very simple: follow the official instructions ;) The problem is caused by a known bug.