Acting for Two: Due to the relatively low budget of the game, many of the cast members voices two or more characters. For the most part, it can be easy to miss unless you listen carefully. For example, Sarah sounds exactly like Chloe since Ashly Burch provided the voice for both characters. It sort of pops up again at the Zeitgeist Gallery, where dozens of patrons are all voiced by the cast:
Missing Trailer Scene: Episode 4's trailer had Nathan shout "The storm is coming! You're all gonna die!" Not only is this line not in the game, there's nothing in the game that indicates that Nathan was ever aware of the storm. The audio file with that line is still in the game files though.
The Original Darrin: Chloe is voiced by Ashly Burch in the original game but is voiced by Rhianna De Vries in Before the Storm. Ashly Burch ended up returning to voice Chloe for the Farewell bonus episode of Before the Storm.
The Other Darrin: Chloe is voiced by Rhianna DeVries in Before the Storm while she is voiced by Ashly Burch in the first game.
Playing Against Type: Ashly Burch usually voices characters that are all-the-way comedic, but this time, she voiced a Troubled, but Cute girl who has gone through a lot of misery in her life, which became one of her best performances in her career.
Not to an extreme extent, but still very much in place. Though there was originally speculation that the episodes would be spaced six weeks apart, this was quickly expanded to 6-8 weeks. After Episode 3 came out at the eight week mark, Episode 4 ended up being released at the ten week mark, with Episode 5 scheduled to come out twelve weeks after Episode 4. These delays occurred partially because of an overly optimistic approach on the part of DONTNOD; though they initially expected to be able to work on all episodes at once, during development of later episodes, it became clear that focusing on one episode at a time was necessary.
The second issue of the comic book sequel was delayed from December 19, 2018 to January 3, 2019.
Sequel in Another Medium: The comic's story follows up on the game's "Sacrifice Arcadia Bay" ending, covering the consequences of what happened and how it affects Max and Chloe's lives.
Serendipity Writes the Plot: A large part of Episode 5 was written to accommodate DONTNOD's lack of a budget, with Max spending a good part of the episode either trapped in the Dark Room or in a Nightmare Sequence that reuses animations and audio from previous segments (thus cutting down on the need to create new assets), as well as a generally linear feel compared to the more diverse branching choices seen throughout the rest of the game. This is also why the "Sacrifice Arcadia Bay" ending is both much shorter than the "Sacrifice Chloe" ending and extremely ambiguous; DONTNOD had to prioritize one ending over the other.
The E3 trailer shows at the end that you can rewind after focusing into a picture. A downplayed example, as it only covers the first three episodes and follows their official release rather than preceding it.
Episode 5's launch trailer spoils that the tornado comes from Max's powers.
In the files for Episode 3, there is a confrontation between Mr. Jefferson and Max, probably intended for after Chloe angrily drops Max off. However, the developers decided to have Max silently exit Chloe's car, followed by an immediate transition to her room.
Also from the Episode 3 files, Chloe's rant was originally supposed to end with her saying, "Max, if I had your power, I would go all the way back and change everything! Everything!" The line was most likely removed because it would have been Five-Second Foreshadowing to what was about to happen.
Episode 3 was originally going to include a scene where a man wearing a suit and gloves examines the red binders. The scene was most likely removed because the figure's build matches Mr. Jefferson's and the developers didn't want to give away the twist.
Unused audio files from the confrontation with Nathan in Episode 4 show Nathan hinting at an oncoming "storm", suggesting that he knows about the storm in Max's vision. Interestingly, Nathan saying, "the storm is coming! You're all gonna die!" was included in the trailer, but didn't make it into the game. As revealed in a spoilercast, Nathan was originally intended to have had a vision of the storm. However, this wouldn't have gone anywhere, so they cut it.
One idea during development was that Max would have been caught red-handed while euthanising Chloe in Episode 4, resulting in her arrest and a Non-Standard Game Over.
Unused audio files indicate that William was going to be one of the characters stalking Max in the labyrinth. He would have yelled at Max for killing him and for either killing Alt!Chloe or leaving her to suffer.
More unused audio files show that Rachel Amber would have appeared before Max in the Dark Room sequence and would have blamed her for her death.
The "Sacrifice Chloe" ending would have originally had Chloe survive her encounter with Nathan and get put into a coma instead of dying. This was changed when the developers realized they wanted the ending to feel more impactful.
The Sacrifice Arcadia Bay ending was seen as lacking in many aspects by some of the fandom, especially as it is seemingly ambiguous on if anyone survives, what happens next, and if Chloe and Max are a romantic couple. Michel Koch, one of the directors, has elaborated some on the intention of said ending, noting that the ambiguity for some of those things was intentional, and some was not. He also occasionally posts on the subreddit for the game, with a few additional tidbits in his comments.
During DONTNOD's charity livestream of Episode 5, the developers confirmed that the person that Rachel said changed her life right before she vanished and the person she was talking about in her letter to Chloe that Max can find in the junkyard in Episode 2 is Mr. Jefferson.
Word of Saint Paul: Ashly Burch, Chloe's voice actress, did an interview with FemHype where she provided some of her personal interpretations of Chloe's character. Among other things, Chloe's sexual orientation and gender identity are fluid and her love for Rachel was unrequited.
sounds exactly like Chloe since Ashly Burch provided the voice for both characters. It sort of pops up again at the Zeitgeist Gallery, where dozens of patrons are all voiced by the cast: