Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-70.239.244.2-20131114232432/@comment-11533671-20131115060758

I think it is pretty clear that he knows all about them. His conversation with Jennifer when she was "sacrificing" him alone proves that he was aware of the Alphas coming so it would stand to reason that this along with his knowledge of the Darach shows that he definately knows about them and probably always has.