Nele tem o módulo RichFaces VE para editar JSP, Facelets e Richfaces... eu testei uma versão antiga, quando era da Exadel. Este ainda não vi como ficou.
What is the difference between JBoss Developer Studio and JBoss Tools
This release of JBoss Tools is what went into our JBoss Developer Studio which provides an easy-to-install Eclipse based IDE fully configured and ready to run with the bundled JBoss Enterprise Application Platform.
In short JBoss Tools are just a set of Eclipse plugins and JBoss Developer Studio adds:
* An installer
* Eclipse and Web Tools preconfigured
* JBoss EAP with JBoss AS and Seam preconfigured
* 3rd party plugins bundled and configured
* Access to RHEL and Red Hat Network
* Access to the JBoss/Red Hat supported software
It is available for existing support customers or under a 99$ subscription which you can read more about here.