This will be the first time users will be able to be able to easily download and install this [Java] stack. They're all just an apt-get command away.
Read it here
The potential for this release is significant, since adding a J2EE application server to a distro is enough to raise some questions about a possible face-off with the Red Hat/JBoss combination. But both Sun and Canonical are emphasizing the developers more, and the enterprise application deployers less.