there are different projects based on RQ-170's technology ... Surveillance / Combat / ...
We are going to unveil one of them soon !
& 35 Years jump is just about engine technology not other parts !
RQ-170 was the most advanced goody
engines of RQ-170 doesn't produce temperature difference with environment around it, so thermal sensors can't track it.
Sound of this engine isn't audible after a certain distance, too and doesn't produce white smoke too.
Say what? hold on! but Iranian official story is that they tracked RQ-170 through thermal image, how could that be?