It'll be out 11 October and is described followingly: "Unlike previous work, which was often quite sparsely voiced, on “Swanlights” the vines in the garden are overgrown and the sound palette has become more exotic; strange percussive elements, John Cale-esque string drones, heavily distorted guitars and symphonic winds and strings thread the song cycle together."
http://www.antonyandthejohnsons.com/news/news.html

That makes the mouth water, doesn't it. There's also going to be a version of the album in a book of Antony's work, although it seems that if you buy that one instead of the normal album, you don't get the Bjork collabsong...