The hype around open sourcing of Java has mostly died down after the announcement. Not many have followed it up. Red Hat had started the IcedTea project to remove the last obstacle in freeing Java. Finally, we have a free Java version (via Simon Phipps) which abides by the Java TCK. Red Hat has bundled it with its recent Fedora version, and I guess that a lot of distributions will follow suit. Till then you can head over to OpenJDK.