From Empire magazine due out on Thursday:
“Kylo Ren is not a Sith,” confirms JJ Abrams in the new issue of Empire. “He works under Supreme Leader Snoke, who is a powerful figure on the Dark Side of the Force."
Here’s a little more from JJ, explaining the First Order origins and comparing them to the Nazis:
“That all came out of conversations about what would have happened if the Nazis all went to Argentina but then started working together again?’” Abrams reveals. “What could be born of that? Could The First Order exist as a group that actually admired The Empire? Could the work of The Empire be seen as unfulfilled? And could Vader be a martyr? Could there be a need to see through what didn’t get done?”
Still, JJ didn’t say Supreme Leader Snoke is a Sith but he also didn’t say he isn’t a Sith either!