Warning: Potential Spoilers for Justice League
Peter Sciretta, at slashfilm, is reporting that the reshoots that are currently underway for the Justice League film, includes an entirely new ending for the film. This news comes fast on the heels of the revelations that the reshoots will lighten the tone of the film as well as addressing problems with the character of Cyborg (presumably a lack of him saying booyah).
The specifics regarding the changes to the ending are as follows: in Zack Snyder's original version the movie would have ended on a cliffhanger, as Darkseid would have shown up at the end of the movie. Apparently Joss Whedon, after taking over the project due to the tragic death of Zack Snyder's daughter, decided to scrap the cliffhanger and focus on Steppenwolf, Darkseid's General and uncle, instead. Sciretta also reports that flashback scenes featuring Robin Wright's Antiope have been added to feature Steppenwolf more prominently as the main villain.
In general, this new ending sounds like a better idea to me. Thanos showing up at the end of the original Avengers movie was more of a tease of things to come than a direct sequel hook, and the Marvel movies had generated way more goodwill by that point than the DC films have now. Considering many people already saw Batman v. Superman as a commercial for upcoming DC films as opposed to a movie in its own right, it seems like an odd choice to make Justice League feel like half of a movie. Shifting the focus to Steppenwolf seems like it will make the movie feel a bit more standalone and still allows for plenty of teases towards Darkseid and the New Gods.
In a larger sense, this story (if true) shows the shifting balance of power between Geoff Johns and Zack Snyder. Johns has been DC's goto guy when it comes to the comics side of things and he is the guy that has been tasked with course correcting the movies after the poor critical reception of what has been released so far. The word on the street is that dark and gloomy is out and optimistic and fun is in. The critical and financial success of Wonder Woman has apparently reinforced these ideas, and again I personally feel that it's generally for the best.
I feel like Zack Snyder is a very sincere guy who tries his hardest, but I ultimately think that he has a very surface level understanding about what makes the DC characters popular. He only cares about action scenes and the costumes, and prefers to radically reinterpret characters as opposed to trying to capture the key characteristics that people like about them. The fact that he thought Batman fans would be fine with him casually murdering people alone shows that there is a disconnect between Zack and the DC fan.
My big question after reading this: is Justice League going to be done for a November release if all of this is true? Redoing an entire ending seems a little tougher than adding dialogue or an action scene, especially since Steppenwolf is a entirely CG character. Only time will tell.