In JBT 4.0.1:

org.jboss.tools.forge.runtime_1.2.2.Final-v20130327-0622-B107.jar

In JBT 4.1.0.Alpha2b:

org.jboss.tools.forge.runtime_1.2.2.Alpha2-v20130419-1639-B54.jar

So timestamp goes up, but service does not?

Should this plugin be versioned 1.2.200? Or should it be 1.3.0? Also, if you're moving up this one plugin, manderse@redhat.com will probably want you to bump the feature/plugin versions for the whole project to the same value, 1.2.200 or 1.3.0.

The big concern here is that we don't want Eclipse to see org.jboss.tools.forge.runtime_1.2.2.Final-v20130327-0622-B107.jar (from JBT 4.0 / Juno) as a "newer" plugin than org.jboss.tools.forge.runtime_1.2.2.Alpha2-v20130419-1639-B54.jar (from JBT 4.1 / Kepler) because of the way osgi view "Final" as newer than "Alpha".

If both work equally well in Juno and in Kepler, this isn't a showstopper unless one of them prevents installation of something else in JBoss Tools due to platform conflicts.

You can bump all poms/manifests/feature.xml files in one operation like this:

mvn -Dtycho.mode=maven org.sonatype.tycho:tycho-versions-plugin:set-version -DnewVersion=x.y.z-SNAPSHOT 

See also: http://machydra.brq.redhat.com:8080/job/devstudio.versionwatch-windows/ws/output.html#Plugin_org.jboss.tools.forge.runtime