That's based on photos tweeted of Ben Affleck dressed as Bruce Wayne from the set of the upcoming "Batman v Superman: Dawn of Justice." Affleck is sporting wings of gray in his hair, and he's wearing a blue shirt and charcoal vest. Certainly, the clothes are dashing enough for the billionaire/superhero. The wreckage in the photos is in front of a Wayne Financial building in Metropolis. Badass Digest has some info about Affleck's Batman, notably that he's been doing his superhero thing for 30 years. That would put Bruce in his 50s, though Affleck doesn't look that old in the set photos. Reportedly, Batman is considered an "urban legend" who nobody has ever taken a picture of. And the Batcave has a memorial to Robin (sniff!).
"Batman v Superman: Dawn of Justice" is currently filming and is scheduled for release in theaters May 2016.