I am concerned about the fact that Walter, whom a guard at a checkpoint listed as to apprehend in the episode “The Bullet that Saved the World”, is walking the streets so freely. While the Observers are not superhuman, fact is, they are humanoids enhanced by tech, one of which is, well, technology to observe. I don’t think Fringe writers would have been so sloppy as to leave such an obvious plot line open; it leads me to believe that Walter has not been apprehended purposefully, and that he is being watched. For what reason, I don’t know.
It is hard to say what is in store. At the centre of Fringe is the relationship between three people: Olivia, Peter and Walter. While one has, for all intents and purposes, been cast aside (which I hope will be remedied shortly), the relationship between the father and the son is being explored to new levels. It is interesting to see the experience of the son, losing his own child, through the eyes of the father, and sad that the latter is too busy with his own self to see anything. As discussed above, this implies that although he is not as arrogant as before, he is still as self-consumed. Despite a rocky beginning, Peter became a favourite of fans and of Olivia because of his humanity. How much of it will be left, either with or without the implant? He has also been the center of big moments in Fringe, and has managed to survive them all. But ultimately, he was not meant to live; does it make his death inevitable?