No, I don't think so, just because they would have given us a sneaky hint or two. And I don't think he originally thought he needed a companion; obviously he's a pretty arrogant guy and is only becoming less so because of his friendship with her (awww). And I so want to meet his dad! If they're gonna tease us with someone as awesome as Roger Rees and then have it not be him, they betta step up their game.
Is Irene Adler really dead?
HOW MANY TIMES MUST I SAY THIS