Arrow was renewed for an eighth and final season by The CW on January 31, 2019. It premiered on October 15, 2019, and will conclude on January 28, 2020.
After a violent shipwreck, billionaire playboy Oliver Queen, was missing and presumed dead for five years before being discovered alive on a remote island in the North China Sea by two men on a fishing boat. He returned home to Star City, bent on righting the wrongs done by his family and fighting injustice. As the Green Arrow, Oliver successfully saved his city with the help of his team including former soldier John Diggle, computer-science expert Felicity Smoak, former protégé Roy Harper, street-savvy Rene Ramirez, meta-humanDinah Drake, brilliant inventor Curtis Holt and Earth-2 Laurel Lance. In last season's finale, in the wake of discovering what his future holds, Oliver must leave his friends and family behind him and will find himself pit up against his most challenging battle yet, one that will leave the multiverse hanging in the balance. In Arrow's final season, Oliver Queen is forced to confront the reality of what it means to be a hero.
Stuck in the Vanishing Point, the Paragons search for a way to escape. The futility of the situation is compounded by The Flash's disappearance. However, hope appears in the form of Oliver, who reveals that he has become something else. Meanwhile, the origin stories for The Monitor and Anti-Monitor are revealed.
It's the year 2040 in Star City and Mia Queen has everything she could have ever wanted. However, when Laurel and Dinah suddenly show up in her life again, things take a shocking turn and her perfect world is upended. Laurel and Dinah are tracking a kidnapping victim with direct ties to Mia and they need her help. Knowing it will change everything, Mia can’t help but be a hero and she, Laurel and Dinah suit up once again to save the city.
This is the only season to feature new series regulars Katherine McNamara, Ben Lewis, Joseph David-Jones and LaMonica Garrett whose only credit for his respective episode appearances and also had an uncredited voice cameo as Mobius in "Purgatory"
Although Katie Cassidy is billed as "special appearance", she is still considered to be a main cast member, according to TVLine.
Season 8 would've been the first since Season 2 to feature two episodes named after songs by Bruce Springsteen including the penultimate episode that's been a tradition in almost every season. But "Livin' In the Future" was changed to "Green Arrow & The Canaries" at the request of Warner Bros. In addition, the backdoor pilot for the proposed spinoff Green Arrow and the Canaries was created after The CW asked Marc Guggenheim to make one more episode despite being aware that Stephen's not in all the episodes due to his deal when the episode order was going to be nine instead of ten.
The first seven episodes featured all the title cards from the first seven seasons in order.
Season 8 marks the third season where the premiere and finale were both directed by James Bamford.