I noticed the following thing in Forge 2. When you setup EJB and you choose version 3.1 of the spec, you get the following dependency: javax.ejb:ejb-api:3.0-alpha-1. So even though I explicitly say that I want EJB 3.1, I get 3.0. As a result I am not able to have things like Singleton beans for example (that is how I caught the issue).
Isn't it better to stick to the other Java EE dependencies and use the org.jboss.spec.javax artifact? I saw that it is there in the EJBFacetImpl_3_1 class, but it is not added eventually to the pom.