I'm pretty sure Eva Green and Olga Kurylenko were tossed around on this board for possible contenders for Catwoman.
I don't think we're going to see Catwoman at all. Which sucks. It looks like it's going to be Talia Al Ghul instead.
Sure, Nolan can make a decent film with Talia. But a theatrical character would be better. Talia is certainly more realistic. But she's bland in comparison, and definitely not as iconic top tier. Now is the chance to do the big three, The Joker, Two Face and Catwoman. No matter how good this ends up, if Catwoman is absent, I think this will be viewed as a missed chance, and a gap in the trilogy.