Sounds very interesting. I also heard of 2010 being the release date, though I hear it may be held back until 2011 for the US. Nicole Kidman is also one of the producers for the film and I believe Gwyneth Paltrow is now playing the wife, rather than Charlize Theron.
Also.. in one of the links it says "In «The Danish Girl», Nicole Kidman will play the first male-to-female transsexual, in 1931: Danish painter Einar Wegener." and the other says "Their marriage took a sharp left turn after Einar (Kidman) stood in for a female model that Greta (Theron) was set to paint." So which one is the painter?