Q:

What does mean #{site.components['arquillian-core'].latest_version} in Maven?

I'm learning a little bit about Arquillian and in this guide has the following code snipet: 
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.jboss.arquillian</groupId>
            <artifactId>arquillian-bom</artifactId>
            <version>#{site.components['arquillian-core'].latest_version}</version>
            <scope>import</scope>
            <type>pom</type>
        </dependency>
    </dependencies>
</dependencyManagement>

but I don't know how to interpret this dependency, in particular the <version> line, can anyone shed some light on the matter? My questions are: what is the version EL expression? and what is a bom package? (I read that it stands for Build Of Materials, but I don't know what it is).
Thanks in advance for your answers.

A:

Anyone else who is stuck should check the solution provided by the dev in response to the OP here.
TL; DR: it's a mistake in the tutorial, the version should be:
<version>1.1.11.Final</version>

