Supernatural is a amazing show. i know i may have just pointed out the obviously but it needed to be said. Also, i agree that it may be sam vs. dean. i think something is going to happen to sam and its going to break him. He already is breaking if you ask me. i think sam willl kill lillith and then dean willl try to stop sam and save him before Castiel and the other angels interfere. thats the last thing he wants. and i think dean will develop powers of his own. i think castiel will give him some to help sam. its just been a thought.
also, i think they may kill bobby off later this season. i hate to admit it but it just seems likely. by who idk but i just have a gut feeling. also i dont think that the new Ruby is lillith. It would be to confusing to do it. there would be no reason for her to do it explain commiting suicide