I don’t know if this has already been said, but I would be upset if Luke Skywalker turned out to be Kylo Ren. That would ruin his whole arc in the OT.
That magazine article from months ago, it was either Empire or EW or Vanity Fair, had photos of Adam Driver as Kylo Ren without the mask on.
Are we sure about that?
Not only that, the final shot of the new trailer shows the back of Kylo’s unmasked head. That’s Adam’s hair (as seen in the VF photo, etc), not Mark.