I have another piece of intel from Batman v Superman: Dawn of Justice to pass along, this time concerning The Flash.
We've known for some time The Scarlet Speedster (played by Ezra Miller) would make an appearance in the DC saga, but the exact details of his introduction were a mystery.
Thanks to a deep dive into BvS by Entertainment Weekly, we now have a spoilery bit of info. In case you want to be totally surprised when BvS opens March 25, I won't post the full spoiler here. I will share this info however - Barry Allen's cameo might involve a dream sequence in which Bruce Wayne receives a warning about meta-humans.
Comics Alliance has more below.
'Batman v Superman' Reveals The Flash Cameo Details