This is the first season finale of Breaking Bad (2008) or Better Call Saul (2015) that wasn't written by Vince Gilligan or Peter Gould.
In the episode's teaser, we see a teenage Chuck (Michael McKean) read to a young Jimmy "The Adventures of Mabel," something that was first referenced in the season premiere (Mabel (2017)). Two important elements of this episode are also visible in the tent: the lantern and the baseball bat.
Longest episode of the show to date.