We met issue when we are migrating from Beta1 to Beta2, we think war name can use a name without version on jolokia-war-1.3.5.redhat-1.war.

The steps:
install beta1 and create a broker
install beta2
change broker artemis.profile updating ARTEMIS_HOME from beta1 version to beta2.

At this point everything works fine except jolokia, the bootstrap.xml still contains the hard coded version to the jolokia war from the previous beta1.

<app url="jolokia" war="jolokia-war-1.3.2.redhat-1.war"/>
where as for the new version it should be.....
<app url="jolokia" war="jolokia-war-1.3.5.redhat-1.war"/>

What we think would be sensible here is to have this jolokia-war unversioned, like all the other wars in the bootstrap xml which means no intervention is required on upgrade other than changing the version on artemis.profile.