Sun's released the finished version of Java Specification Request (JSR) 121, Application Isolation API. The goal is to allow a single Java virtual machine to run many different programs simultaneously that do not share heap space, static variables, singletons, and other things that are normally shared by every object in the same virtual machine. This is especially important in servelt containers, appplication servers, and the like.
JSR-298, Telematics API for Java ME has been voted down in the Java Community Process (JCP) by 3-2 with a lot of extensions.