This is highly dubious. Found
another site reporting that this whole Season 6 business is a hoax originating from the very same National Report article posted in the OP.
What's more, I can't find any official word from AMC, Vince Gilligan, the former BB cast, or anyone other relevant parties announcing a sixth season of BB -- which you think they would, since this would be
a pretty big deal.
Gilligan is currently busy with the BB spinoff "Better Call Saul" (a BB prequel following Saul Goodman), as well as new project "Battle Creek".
And plot-wise, a sixth season is unnecessary, since the fifth (and final) season ended exactly where it should. Continuing the story of Walter White would violate the thematic point illustrated in the series finale (and throughout the entire series).
So in principle, a continuation of BB proper is a bad idea, and no official sources have discussed as much. It's fair to say that unless AMC/Gilligan/etc. announce this news themselves, this "National Report" article is a hoax.
EDIT:
Mashable also reports that "National Report" is a satire site, that no official parties have confirmed this sixth season business, and that the author of the NP article admitted to its fabrication.