Glen,
apparently yes in version 8 a module system is scheduled...but don't confuse the jboss module system with OSGi. Also take into account that in some preliminary implementations ,of the JSR for the modules, was a bit..let's say clumsy..Still myself I don't have a clear answer I solved my problem by switching to OSGi and using apache aries to help me with transforming my project to OSGi enabled projects.I don't know if some guys from JBoss are inside the JSR commitee for the modules.
regards
Nick