Sun announced that OpenJDK will be bundled and distributed with both Red Hat Fedora 9,and Ubuntu 8.04 (in both server and desktop editions). Additionally, NetBeans 6 will be bundled with Ubuntu's 8.04 LTS distribution, which by the way has also been certified on several Sun x86-based servers. You can read more at http://www.sun.com/aboutsun/pr/2008-04/sunflash.20080430.1.xml.
“Open sourcing Java under GPL v2 has always been about bringing the power of Java technology to new markets, and enabling new innovations. With an OpenJDK-based implementation included in both Fedora and Ubuntu, developers can now rely on a stable, open source Java as an integral part of these GNU/Linux distributions,” said Jeet Kaul, vice president of the Client Software Group at Sun.
You can read more on the OpenJDK project (a GPL v2 version of Java) at http://openjdk.java.net
You can read more about NetBeans 6 at http://www.netbeans.org
Happy Java coding!