ok now when you read this it should blow your mind and put it to rest at the same time. remember when john pulls the donkey wheel and gets transported to the future to convince the o6 to return. he visits Walt and walt says to him that hes been having dreams about john where john is on a beach and wearing a suit, and there were people trying to hurt him. this was a blog a while ago and i posted a comment that it was refering to the incident with ceasar getting shot. NOW i truly believe that walt was seeing the real john on the beach meaning that it has yet to happen and john might come back to life. if not then walt was seeing the apparation of john and the ceasar incident. but if not then somehow/someway john would come to life then and get mixed up with the imposter/doppleganger. i cant wait til next season and i do mean cant.