There’s also information on all the scenes removed from and added for the theatrical cut, what Snyder’s Justice League 2 and 3 would have been about and even a blurb on the Justice League: Black Suit Edition fan edit that’s coming out later this year.
Either way, if you’re wondering just how different the theatrical version of Justice League differs from what Zack Snyder planned to deliver, this page goes into a lot of detail on the subject.