I honestly hope that this is a fake leak. I would download it, but I'd feel bad for them that their release plan was screwed up, not to mention that someone somewhere along the way betrayed them to do it.

According to my own, personal torrenting ethics, I'd have to just buy it for real once it was available anyway. I generally only excuse myself from that if I end up hating it, or if it's not available legally in the U.S. (Or if it's, like, hundreds of dollars - I'm unfortunately rather ethically flexible in some ways.)