Ok, I hate the Hugo Strange/Catwoman rumours. Here's why: first of all I hate Hugo Strange as a villain. He has no villain name or costume, doesn't even LOOK cool, and is completly WEIRD. And Catwoman becouse didn't she already have a film in the reboot series (Catwoman was the only one not to feature Chris Nolan as the director)? Luckily, the movie will be filmed in Asia (bye bye Hugo Strange). That means a possible villain (if not, love interest) Talia Al Ghūl. In Batman Begins, we learn that, unlike Batman comics, when Rās Al Ghūl says he's "immortal" he means the roll of RAG is past on from master to apprentace and that means Talia may become the new Ras Al Ghūl.
But if filmed in a major city (Hong Kong for ex.) the villain my be an assassan like Deadshot. Possibly my favorite rumour of all time: Black Mask and Hush!!!