Amazingly, it wasn't from a set report leak but an official photo, although we got a better look from other sources later. The official photo as released by Warner Bros. shows a rather hi-tech Selina Kyle, wearing the tight leather outfit we'd expect but also a pair of glasses not unlike a 2011 version of the goggles worn by Ray Stantz in Ghostbusters.
She's also riding the Batpod, which might have seemed strange at first. However, it's clear that the shot is from the Pittsburgh shoot, where further photos of what seems to be a stunt double show Catwoman seemingly escaping in the tumbler.
It seems with these images, the internet is currently doing its usual doom and gloom, but there are three reasons why there is no reason to worry: 1: Batman Begins; 2: The Dark Knight; 3: Christopher Nolan.