In the distro, I have finaName specified in the pom build and in the assembly execution:

<project>
 ...
 <artifactId>jbpm-distro</artifactId>
 ...
 <build>
 <finalName>jbpm-${project.version}</finalName>

 <plugins>
 <plugin>
 <artifactId>maven-assembly-plugin</artifactId>
 <version>2.2-beta-3</version>
 <executions>
 <execution>
 <id>create-distribution-package</id>
 <phase>package</phase>
 <goals>
 <goal>single</goal>
 </goals>
 <configuration>
 <finalName>jbpm-${version}</finalName>
 ...

and in the assembly descriptor

<assembly>
 <id>jbpm.distribution</id>
 <finalName>jbpm-${version}</finalName>

still mvn stubbornly installs the distribution file as jbpm-distro-${version}.zip

[INFO] [install:install]
[INFO] Installing C:\wsjbpm4tbaeyens\jbpm4\modules\distro\pom.xml to C:\Documents and Settings\tom\.m2\repository\org\jbpm\jbpm4\jbpm-distro\4.0.0-SNAPSHOT\jbpm-distro-4.0.0-SNAPSHOT.pom
[INFO] Installing C:\wsjbpm4tbaeyens\jbpm4\modules\distro\target\jbpm.jar to C:\Documents and Settings\tom\.m2\repository\org\jbpm\jbpm4\jbpm-distro\4.0.0-SNAPSHOT\jbpm-distro-4.0.0-SNAPSHOT.jar
[INFO] Installing C:\wsjbpm4tbaeyens\jbpm4\modules\distro\target\jbpm-4.0.0-SNAPSHOT.zip to C:\Documents and Settings\tom\.m2\repository\org\jbpm\jbpm4\jbpm-distro\4.0.0-SNAPSHOT\jbpm-distro-4.0.0-SNAPSHOT.zip
 [INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 32 seconds
[INFO] Finished at: Sat Apr 25 11:50:19 CEST 2009
[INFO] Final Memory: 22M/1016M
[INFO] ------------------------------------------------------------------------

anyone got an idea what i'm missing ?