Section 11.1. "Summary of JBoss Remoting Features" is somewhat out of date, and Section 11.2. "JBoss Remoting Configuration in the JBoss Application Server" is wrong.
It's still unclear whether Remoting 3 will be ready for AS 5.1.0. If not, then I would be happy to fix the doc, if I knew where it is. If Remoting 3 ships in time, then I'm sure someone from Remoting can supply the appropriate information.