Sun is soliciting comment on the Java Specification Request (JSR) or "Mustang" Java SE 6.0. The new version will include a Java Activation Framework (JAF), Java Architecture for XML Binding (JAXB) 2.0, and Java API for XML Web Services (JAX-WS) 2.0.

The current stable version of Java SE 5.0, code-named Tiger, was released in September 2004. "The JCP produces high-quality specifications in Internet Time using an inclusive, consensus building approach that produces a specification, a reference implementation (to prove the specification can be implemented), and a technology compatibility kit (a suite of tests, tools, and documentation that is used to test implementations for compliance with the specification)," according to information on a Sun website that is focused on this process.

This version of the JCP was developed through the JCP by means of JSR 215, led by Sun and the combined Executive Committees as the expert group.

An Executive Committee (EC) representing a cross-section of both major stakeholders and other members of the Java community is responsible for approving the passage of specifications through key points of the JCP and for reconciling discrepancies between specifications and their associated test suites. There are two ECs: one to oversee the Java technologies for the desktop/server space (with responsibility for the J2SE and J2EE specifications) and the other to oversee the Java technologies for the consumer/embedded space (with responsibility for the J2ME specification).