According to
TV Overmind, the fouth episode of
Fringe (3rd season -- denoted as Ep. 3.04 in fandom) will be titled "Do Shapeshifters Dream of Electric Sheep?" The title is a nod to Philip K. Dick's book
Do Androids Dream of Electric Sleep?, which was the basis for the cult noir hit movie "Blade Runner" starring Harrison Ford.
The article also suggests that the even-numbered episodes of the series take place "over here", whereas (apparently) the odd-numbered episodes take place "over there". I don't know where that was disclosed but I had a pretty busy summer. I could have missed out on a lot of advance publicity.