Michael Grant said this in an interview back in June:
"LIES will come out in just under a year from now. It will be about deception --- the lies people tell for greed, the lies they tell for the best of reasons, and the lies they tell themselves. Kids will do some desperate things in LIES. But I'm not giving away any spoilers. Except that some of you are really going to be mad at me for something that… no, wait, I'm not even going to hint."
The whole interview is posted on
link