Renewed for S2 even before the 3rd episode aired!
E3 was odd and unexpected. Almost the entirety of what is in that episode is not in the game, it is basically backstory for an event in the game (Bill helping Joel). While I found it interesting to know how that whole thing came about, it sort of does not fit the nature of the series and maybe that is part of why they changed it. The way that sequence ends in the game is much darker than the show and it sounds like their original cut for this episode was more along the lines of the game and was 2hrs long, yet they decided to change it when they had to shorten it. I was thinking the show was moving along pretty quickly, but this one slowed it right down.
There is another segment that seems to be in there that is an add on to the game that is a prequel for Ellie before the events of the series; it seems to be shown in the trailer clips. That should be good too.