Here is the source of rumor, a snippet from CNet News,

And there's potential that Sun also could be more accommodating of C#, Microsoft's .Net analog to the Java language. Sun Chief Technology Officer Greg Papadopoulos said Sun is examining modified virtual machine software that can run other languages besides Java. The initial focus is on scripting languages, but other options include Fortran and C, and there's "no barrier" to a virtual machine that could run C#, he said. "The virtual machine is capable of executing more."