Snyder Cut reportedly reshot ending with a superhero cameo

I'm guessing it's gonna be a Green Lantern?

"It sounds like another, as-yet undisclosed character could be joining the ranks. In a recent interview with Vanity Fair, Snyder discussed the process of making his Justice League a reality and some of the new details fans can expect. That interview includes a claim that “[Snyder] has reshot the ending with a hero cameo that will blow hard-core fans’ minds.” There’s no direct quote from Snyder on that matter in particular, meaning that the character in question will likely remain a mystery until the film releases. Still, the promise of a special cameo is plenty of cause for excitement."