THis is completely and utterly fake. First off, Greg has clearly stated that we'll be focused on Bara Magna for the next two years. So that means that the appearance of Tahu, "Rahkshi", "Piraka", Takanuva, is not happening. Also, all those are either group names or names tha have been used before. Lego would not reuse a name for fear of confusion. This also debunks Skrall and Gresh from the list. I mean, mom is searching Amazon for little Timmy's birthday present. She knows he asked for "Gresh", but the search comes up with two of the same name. How should she know which one?
So it's not happening. Thankfully. Oh, and the Atlantis set? That might be fake. I see no new or recoloured parts, which are very consistent in themes like that.