There is just those much needed improvements to Java in Dalvik, which would be usefull (See "So, Why Dalvik?").

Actually I think they (Oracle, LinuxFoundation, JCP, ...?) should make new Java and Java ME versions which would have those; cow type shared memory for classes and separate sandbox for every process. The stack based bytecode should not be changed to register based for portability.

But when in the future we will have many cores in CPUs and more RAM also in mobile phones, Java's advantages compared to old programming languages will come forward more clearly. Just the ability to optimize in the run-time and divide work automatically to multiple cores will make C/C++ obsolete for everything else but for device drivers or for well defined libraries.

People writing applications to Dalvik are doing it in Java. Porting QtJambi to Dalvik and having same applications run in every platform would be amazing. I think Nokia would be mainly interested that people are writing Qt-programs.