What is “Mustang”?
Mustang is the code name for J2SE 6.0. (1.6.0) The Mustang release of J2SE is expected to include a number of key changes to J2SE including changes to the release model of the JDK, XML and Web Services, Transparency, Ease-of-Development improvements, better compatibility, an updated to the API for accessing JDBC, and the addition of a scripting engine. There will a refined GUI as well as graphics performance improvements.