For those of us who slept through the month of June, the OpenJDK 6 stack in Fedora was certified as TCK compliant. Meaning it can carry the �100% Java(TM)� moniker. Rich Sharples has a nice write-up (with a second part answering the blogosphere):
In June, 2007 - Red Hat launched the IcedTea project with the goal of making OpenJDK usable without requiring any other software that is not free. That in turn would allow OpenJDK to be included in Fedora and other Linux distributions without restrictions. The IcedTea Project made use of previous work developed under the GNU Classpath Project which had been independently driving towards a free and open implementation of the Java class libraries.
This week [19 June 2008 - ed.] the IcedTea Project reached an important milestone - The latest OpenJDK binary included in Fedora 9 (x86 and x86_64) passes the rigorous Java Test Compatibility Kit (TCK). This means that it provides all the required Java APIs and behaves like any other Java SE 6 implementation - in keeping with the portability goal of the Java platform. As of writing, Fedora 9 is the only operating system to include a free and open Java SE 6 implementation that has passed the Java TCK. All of the code that makes this possible has been made available to the IcedTea project so everyone can benefit from the work.
At another point in his article, Rich mentions that we can expect to see this Java SE 6 in an update to Red Hat Enterprise Linux 5. The packages are already available from Fedora�s Extra Packages for Enterprise Linux, the source for the packages that Red Hat engineering is going to QA/test and build for the Enterprise Linux 5 update.