At JBossWorld we were told that a subset of JBossON would be part of JBossAS. According to my notes, this subset would enable management of data sources and message destinations. Hopefully this functionality will appear in CR1.
The api changes to support the jon open-console will be in CR1. I guess there are still some licensing issues we are cleaning up such that we may not bundle the new open-console in CR1, but it will be available separately.