Currently JBoss Central's Create Projects section includes the following:
1) Dynamic Web Project
2) OpenShift Application
3) Java EE Web Project
4) Java EE Project (Java EE EAR Project)
5) HTML5 Project
6) RichFaces Project
7) SpringMVC Project
8) GWT Web Project

And in 2013 we can expect at least the following potential archetypes to be created:

• Portal/Gatein Project
• EDS/Teiid Project
• SOA/Switchyard Project
• BRMS/jBPM/BPMN2 Project
• BRMS/Drools Expert Project
• Fuse/Camel Project

These additional archetypes would only need to be available when the end-user has:
a) acquired the additional tools (JBoss Central - Software/Update tab)
b) potentially switched to the correct Perspective

This jira represents the "design" discussion.