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<p>We've documented some of the new features coming along in <a shape="rect" href="../../../changes-in-40.xml">the 4.x branch of ActiveMQ</a>. In particular the things I'm particularly happy about are</p>

<ul><li><a shape="rect" href="../../../exclusive-consumer.xml">Exclusive Consumer</a></li><li><a shape="rect" href="../../../message-groups.xml">Message Groups</a></li></ul>


<p>I really love <a shape="rect" href="../../../message-groups.xml">Message Groups</a>, they totally rock! <img class="emoticon emoticon-smile" src="https://cwiki.apache.org/confluence/s/en_GB/5997/6f42626d00e36f53fe51440403446ca61552e2a2.1/_/images/icons/emoticons/smile.png" data-emoticon-name="smile" alt="(smile)"> Its well worth reading the overview of what they are and how they can be useful making a partitioned high performance grid style distributed system with ordering or fast caching etc.</p></div>