Jboss EAP 5

Hello,
I'm preparing a presentation about various jboss eap inside my compagny's environment.
I would like to know:
1. JBOSS EAP 5 is still supported by you?
2. which effort to migrating applications built with JBOSS EAP 5 to JBOSS 6.4?
3. Could I deploy ear built in JBOSS EAP 6.3 inside JBOSS 6.4?

Thanks advance for your answer.