In case you were debating whether or not the Batman v Superman scene we saw last week was a dream sequence, we now have confirmation that it is. Plus, we have new details on Batman's DCEU history, the Trinity's costumes, and a possible cameo from The Flash!

Earlier today, at the CCXP - Comic Con Experience 2015, Michael Wilkinson, who designed the costumes for Warner Bros.' Batman v. Superman: Dawn Of Justice, spoke at length about creating the costumes for DC's iconic Trinity - Superman, Batman, & Wonder Woman. In his chat with Omelete, he dropped a handful of very interesting details about the upcoming Zack Snyder-directed film.

The biggest of his many reveals was that we will catch a glimpse of at least one other key Justice League member - The Flash. Now, the extent of his cameo is yet-to-be seen, so while there is a chance we actually get to see Ezra Miller suited up in costume, there's an equally good chance that we only catch a shot of him speeding around on a TV screen (something which has been previously rumored).

In case you were still on the fence about whether or not that intriguing Batman v. Superman scene that debuted with the fall finale of Gotham last week was a dream or not, Wilkinson confirmed that it was in fact a part of an extended nightmare sequence for Bruce Wayne. He doesn't elaborate much more, but does describe it as a "post-apocalyptic vision" that will feed Wayne's obsession over the perceived threat of Superman. So, whatever those flying creatures are, they're almost certainly not Darkseid's Parademons, unless they're just clever Easter Eggs that were added to foreshadow the upcoming two-part Justice League films.

Additionally, we learned from Wilkinson that in the DC Extended Universe, Batman has been operational for over twenty years and that this film takes place nearly eight months following the cataclysmic events of Man Of Steel.