JBoss ESB is currently and will continue to be supported as part of SOA Platform 5. For SOA Platform 6, JBoss ESB will be replaced by SwitchYard. SOA Platform 6 shares many key elements with Fuse, including support for Apache Camel, CXF, and ActiveMQ. All of these projects will be active on the community front as they are all supported in products offered by Red Hat and will be for some time.
There were a number of sessions at Red Hat Summit this year which talked about alignment and roadmap for Red Hat integration. The slides should be available soon here: