The Master chief

I love halo 4 and what it has to offer, but I wonder, what is the Master chief’s next step, in general, now that cortana is gone, he is alone on board the U.N.S.C Infinity and has still yet to discover what the librarian ment by “Yoy are the culmination of a thosand lifetimes of planing”, does this mean that John is somehow part of the forerunner race or does this mean that he is the perfect being?

I wouldn’t be surprised if there was some sort of physical evolution going on in the next game. Or, maybe as was the case in cryptum, he’ll remember humanity’s past. We already know from the game that he can hear things that aren’t “physically” there, or that cortana at least couldnt’ pick up, which is saying something.