The information situation hasn't changed since MH370 disappeared: We know, that we know nothing except, that a B777-200ER with about 300 souls disappeared from the sky on 08.03.14.
The is no proof for any theory or rumours. We are getting since then contradicting informations only.
Possibly do the governments and secret services know more and this is a classical secret service operation by providing misleading information to the public.
Again: The only thing which is sure is, that we do not know anything about what happened.