The latest release in the 2.2 line, 2.2.2.SP8, is now available. In particular, the distribution file, jboss-remoting-2_2_2_SP8.zip, is available at
http://www.jboss.org/jbossremoting/downloads/,
and the new jboss-remoting.jar is available in the zip file. Soon, it should be available at
http://repository.jboss.com/jboss/remoting/2.2.2.SP8/
as well.