Survivors?

Is Erin Hunter coming out with a whole new series? Oh the HarperCollins site, if you bring up the page about The Last Hope (OOTS #6), it mentions Survivors under the Marketing/Publicity section.
(click to enlarge)
Kate Cary said:
Well spotted! Yes, there is a new project on the horizon called Survivors, but that’s all I’m saying for now! You know how much we Erins love our secrets. 
***
Dawnwing spotted that a few days back! Gosh you Warriors fans are so eagle-eyed! Yes, there is a new project on the horizon called Survivors, but that’s all I’m saying for now!


It is rumored that it will be a completely different series, but the Erins aren't saying anything yet, but there have been ideas that it could be a branch off of the Warrior Cats series. More info from the Warriors Message Board, the topic is "Compilation about new Erin Hunter series, Survivors"