ABC is rumored to renew Agents of S.H.I.E.L.D. for season 6, with the network keeping the flagship Marvel TV series for another year. Agents of S.H.I.E.L.D. initially premiered in 2013, spinning off from the events of The Avengers and continuing the story of Phil Coulson. Though it debuted to record-breaking ratings for ABC, viewers quickly fell off throughout season 1. Unfortunately, the series didn't find its footing until the tie-in episode with Captain America: The Winter Soldier. Those who stuck with it, though, would undoubtedly argue it's only gotten better with each season.
Currently, Agents of S.H.I.E.L.D. is in season 5 and dealing with saving the Earth from cracking apart like an egg. After a trip to the future, they're back in the present day and trying to change the timeline. However, certain members of the team aren't convinced the time loop they're stuck in can be changed. Still, it's up to S.H.I.E.L.D. to save the world from a threat most don't even know about. Meanwhile, a new rumor about Agents of S.H.I.E.L.D.'s season 6 renewal chances saves fans of the series from worrying (too much) about the show.
In past years, Agents of S.H.I.E.L.D. has often been on the bubble (a show that could be renewed or cancelled) with decent enough ratings, though the series is typically not up to par with the network's bigger hitters. Last year, early buzz indicated ABC would renew Agents of S.H.I.E.L.D., and the network did eventually order a fifth season. However, it was later revealed the parent company of ABC and Marvel TV, Disney, had to step in on Agents of S.H.I.E.L.D.'s behalf. Further, early reports have been wrong in the past, just look rumors about Agent Carter being renewed for season 3 before it was officially cancelled by ABC.
With that said, Agents of S.H.I.E.L.D. is ABC's last Marvel TV series, considering Inhumans is all but assuredly cancelled after its lackluster season 1 run. With both Agent Carter and Inhumans now done, the network needs to keep Agents of S.H.I.E.L.D. if ABC hopes to remain the "mothership" for Marvel TV. Marvel TV has greatly expanded in recent years, with six series at Netflix, one at Hulu, and an upcoming show on Freeform. With no Marvel TV pilots moving forward this year, S.H.I.E.L.D. is the only Marvel series ABC could schedule for the 2018-2019 season. But, all that doesn't necessarily guarantee Agents of S.H.I.E.L.D. a sixth season.
In terms of what Agents of S.H.I.E.L.D. season 6 could be about, there are plenty of ways the show could go. However, it still remains to be seen where season 5 will end up, and what effect - if any - Avengers: Infinity War will have on the series. The movie is expected to have a major impact on the film side of the Marvel Cinematic Universe, but with the TV shows operating separately for the most part, it's unclear how the film's events will be explained. Still, no matter which direction Agents of S.H.I.E.L.D. goes, fans will no doubt be pleased to hear the team will may continue on for another season.
Agents of S.H.I.E.L.D. airs Fridays at 9pm on ABC.