Back in 2007 the IcedTea project was created by Red Hat
for a completely open-source Linux OpenJDK package after Sun Microsystems had opened up most of Java. Since then IcedTea has moved to being based off of OpenJDK6 and this free software project continues to flourish. Today OpenJDK has come to the web in the form of IcedTea-Web. IcedTea-Web delivers on an open IcedTea-powered Java web-browser plug-in and Java Web Start support.
This is the first official release of IcedTea-Web (v1.0) provides the IcedTea NP plug-in and a Java Web Start implementation via the javaws binary, which is based upon NetX. There's also a preview of the itweb-settings tool, which provides a graphical user-interface for controlling settings of NetX and the IcedTea web plug-in.
Details on the IcedTea-Web release can be found in this blog post
and on the ClassPath.org Wiki