John,
Sorry for the late reply, but yes we use Jboss in Production and why not the cost of ownership can be much cheaper than Weblogic and WebSphere.
The current supported version is Jboss5.1, basically we need to move to Java 7 to keep up with some swing compliance. I have no preference to either community or Vendor, I can get the code to work on both for the supported version.
So what is the basis for CA to assess whether Jboss x.x is in use for CA clients, I have not seen an app server poll, or conversation on current practices for deploy ? Not even sure of the Logic for which Jboss to support, basically EAP5 will be at closed support on the first Q of this year, so will the Tech Reqs be updated to Jboss6.x ?