Artorias of the Abyss DLC also coming to PS3 and XBOX360!
Not as of yet, but it will eventually make it's way onto consoles.
For that price there had better be at least 2 new areas. I know there are two new bosses so it seems likely. I assume it will also add new weapons and armor and maybe even magic and a ring or two. For that price I am hoping for around 15-20 hours of play.
Any less then that and I am not sure the price could be justified.
From finally tweeted and announced they are releasing the DLC in Japan as well as the PC edition, October 25th.