Here's a scoop from Dark Horizons:
"One of the workshops at Shepperton has 'Dark Knight Films' on the sign. I asked a guy nearby if he knew anything about it, he said he's going to move onto it as soon as he finishes on the Trojan War project. Its expected to begin production in Feb 2004 with either Christian Bale, Josh Hartnett or Cillian Murphy from '28 Days Later'. Murphy seems the most likely to get it as Hartnett doesn't seem to be interested and Bale is stalling because if he takes on Batman he knows he can kiss goodbye to a future chance at the Bond role. Whilst all this talk is running rampant about the hero, a piece out of left field came today about the villain - 'Kate' went to see Russell Crowe's band '30 Odd Foot of Grunts' when they were recently on tour and Crowe apparently mentioned he's been offered a "damn bad guy role thing that the guy from Memento's doing".
Just as well, here's a scooper over at Ain't It Cool:
I live in Shepperton village, England, about 3 minetes from the Studio. the pub that I drink in often has film crew and extras having a pint or two. I asked around after reading your Batman news and it seems that the rumours are true. A member of the construction crew told me the sets are being constructed including a giant lair in the shape of a spiders web. Speculating, the only thing that i can think of would be the black widow played in the the 60s by Bette Davis. There is also supposed to be a few of the sets with a strong egyptian theme but he was fuzzy on the detials as they are only head height in order to make room for the remainder of them to be computer generated.