These files in the jbosstools-central repo need to be tweaked in prep for Final release, so they'll point at http://download.jboss.org/jbosstools/updates/stable/juno/ instead of http://download.jboss.org/jbosstools/updates/development/juno/

./central/plugins/org.jboss.tools.central.discovery/plugin.xml
./central/README.Central.milestone.testing.txt
./examples/plugins/org.jboss.tools.project.examples/pom.xml
./examples/plugins/org.jboss.tools.project.examples/src/org/jboss/tools/project/examples/configurators/DefaultJBossCentralConfigurator.java