The sequence is readily available, but there’s actually been no clear promo shot of Ben Affleck in the costume yet, so this is a nice treat for DC fans.
Batman V Superman: Dawn of Justice was a jumpstart for the DC Extended Universe, running on from the fairly standalone Man of Steel into a massive wider world to rival Marvel’s.
Zack Snyder recently shared a behind-the-scenes photo on Vero of the trenchcoat costume worn by Batman in the sequence, giving a better look at his battle-damaged armour.
This was used ostensibly to motivate Bats into an all-out war against Supes, showing his fears come real, and at the end was hinted to be a key motivation for the formation of the Justice League; although for many it was just a captivating alt-future scene.