Several reviewers had noted that the series' episode titles, are often taken directly or slightly altered from the titles of older films. For Example, De Elizabeth of TeenVogue points out that Riverdale's pilot episode was named "River's Edge" after the 1986 film of the same name, and the season finale also takes its name from 1997's The Sweet Hereafter. Executive Producer Roberto Aguirre-Sacasa notes that this is a deliberate choice, in order to hint at what will happen in that episode.
In July 2016, members of the cast and the executive producers attended San Diego Comic-Con to promote the upcoming series, where they premiered the first episode "Chapter One: The River's Edge". The first trailer for the series was released in early December 2016. The CW also sponsored multiple Tastemade videos, where they cooked several foods that are popular in the Archie universe.
An album of Blake Neely's scoring for season 1 was released on compact disc by La-La Land Records and simultaneously on download by WaterTower Music on July 18, 2017.
In September 2017, it was reported that a live-action television series was being developed for The CW by Warner Bros. Television and Berlanti Productions, with a planned release in the 2018–2019 television season. Based on the comic series Chilling Adventures of Sabrina, featuring the Archie Comics character Sabrina the Teenage Witch, the series would be a companion series to Riverdale. Lee Toland Krieger will direct the pilot, which will be written by Aguirre-Sacasa. Both are executive producers along with Berlanti, Schechter, and Goldwater. In December 2017, it was reported that the project had moved to Netflix under a yet-to-be-announced new title. Two seasons, comprising ten episodes each, have been ordered by the streaming Service. In January 2018, it was announced that the lead role of Sabrina Spellman would be portrayed by Kiernan Shipka, and CW President Mark Pedowitz noted that, "at the moment, there is no discussion about crossing over" with Riverdale. Filming for first season began on March 19, 2018, just as filming of the second season of Riverdale concludes, which will allow the same crew members to work on both series. It is expected to film back-to-back with the second season.
