Latest official news has confirmed the H-20(HX in the news) has finished it's design.
(of course, the design should be finished years ago, but it's the first time confirmed officially)
The news is actually a CV of a female enginer "张骞文"(Zhang Qianwen). Her CV shows that she took part in the design of the finished types of C919 etc., which include the most important type
HX. We believe that this HX means H-20. And the next H6N in the latest version of H-6 after H-6K which has air refuel capability.
Link:
http://www.sohu.com/a/165307613_600531
You are right. I may misunderstand the words of "rolled out". But yes, it has placed off the assembly line.
I am sorry but I have to say it's unreliable rumor.
I personally believe it's true. But I have no confirmation.