An image of Nicole Kidman as Mrs Coulter, with her golden monkey daemon, has surfaced; with thanks to Situ for alerting us. It may be from the promotional brochure New Line have been sending out; although the consensus seems to have swung towards it probably being fake – it's an interesting image nonetheless, and fits well for a wallpaper. You can view the image here.

edit: Upon further investigation, it is actually a genuine scan from a New Line promotional booklet.