That's only a rumour and not confirmed. We know from JAT and things said over the last few months that S6 is finished or practically done. IGN said back in November that Filoni had told them that S6 was practically done. So there is some confusion considering what the fans know. In a few days RebelForceRadio will be interviewing Filoni. I'm not holding out any hope that he will reveal anything but you never know.