According to Marvel TV head Jeph Loeb, season 2 of The Defenders isn't in the cards. When Marvel first announced their plans for a street-level corner of the MCU on Netflix, the deal entailed four solo series leading to a team-up based around the Defenders from the comics. Since that time, however, new seasons of each show have been planned or released and The Punisher was added to the mix. But last year, The Defenders finally debuted and joined Jessica Jones, Daredevil, Luke Cage, and Iron Fist together for the first time in a live-action setting. Unfortunately for fans, it was never planned to be an ongoing affair.
Like with the movies, Marvel is beginning to do more and more mini team-ups on their shows. Each Netflix series so far has featured cameos from various supporting characters, but Jessica Jones kicked it up a notch by introducing Luke Cage ahead of his show. Later this month, season 2 of Luke Cage will feature Colleen Wing when she teams up with Misty Knight. Not to mention, Danny Rand will be stopping by Harlem before Iron Fist returns, presumably next year. Despite all the connections, though - or perhaps because of them - The Defenders season 2 may be a pipe dream.
Jeph Loeb did an Ask Me Anything on Reddit earlier today, and one fan naturally broached the question about a season 2 for The Defenders. According to Loeb, it's "not in the plans right now, but you never know!" So while the return of the show isn't impossible, it's not seeming likely.
The Defenders was always conceived as a single miniseries, telling one compact story that united the street-level heroes of the MCU and many of their foes. The reverberations of the plot will affect aspects of Luke Cage, Iron Fist, and Daredevil, and various crossovers seem destined to continue happening. Misty Knight is already scheduled to show up on Iron Fist, and fans are certainly eager to see Jessica Jones and Matt Murdock join forces again.
Because of these smaller team-ups, though, The Defenders may not be necessary. There's also some confusion as to the future of the Marvel-Netflix shows once Disney's new streaming service launches next year. For now, things are moving forward with Jessica Jones season 3, as the show should start filming soon. Iron Fist set photos, meanwhile, have teased some of the show's plot, which is expected to unfold next year along with the return of The Punisher. Beyond that, we'll just have to wait and see.
Source: Jeph Loeb/Reddit