Yes and no. JBoss EL (which is really Seam EL put int it's own repository) is not an official impl of EL 2.2 (that's the new EL version in Java EE 6). It would be better if you linked against the official version from GlassFish. I'm not sure what is going to happen with JBoss EL. What I'm sure of is that we don't want to pass it off as being EL 2.2.