JAX-WS 2.1 support - the JAX-WS implementation has been updated to the JAX-WS 2.1 specification level. Code generatation is JAX-WS 2.1/JAXB 2.1 compliant.
Initial implementation of JAX-RS 0.6 REST based service framework.
Javascript client generation and support - SOAP based endpoints can have javascript clients created automatically with ?js URL. There is also command line tooling.
CORBA binding merged from Yoko - JAX-WS Clients/Servers can talk IIOP to allow communication with other CORBA processess. Tooling for IDL -> WSDL, WSDL -> IDL, etc... are there to support this.
New java2ws tooling to support better "java first" development patterns.
xmlbeans runtime support to allow using XmlBeans for the data model.
MANY MANY bugfixes, performance enhancements, etc... Too numerous to list individually
2.1版本增强了对REST的支持,结合其对 JavaScript and ECMAScript 4 XML (E4X)的支持和使用xmlBeans操作XML的便利,使用apache CXF构建基于REST风格的RIA是一个不错的选择。