Not quite sure if I understood your question, but if you're asking for commercial subscription support, you should consider redHat's EAP here: https://access.redhat.com/site/articles/112673
You can see that EAP has a life-cycle of its own, and picks JBoss products and versions over certain others.
When it comes to differences I guess the topic is quite vast: starting that different versions comply to different JEE versions - that would be quite a feature difference!
HTH,
~pasquale