Yeah, I'm not sure why they are doing this either. I think they did the same thing for Never Gone. I feel like that was another album where I heard almost all the songs before they were released. I am kind of happy they are doing it since I can't really get the CD until a few weeks after it's released. I have been cheating with everything this time around. I plan on watching all the tour stuff too since I won't be able to do that either.
Never Gone was weird because they did that club tour months before it came out and sang some of the new songs, so we'd heard about half of them through that - Beautiful Woman, Poster Girl, Weird World, Climbing the Walls, Incomplete of course, and maybe I Still? I still think half of NG was new to me when it came out, though, and I don't remember going out of my way to avoid leaks - I pretty much watched and listened to everything during that era.
I know a few songs off Unbreakable leaked, and because of that, I know I avoided the leaks like the plague for TIU. The only song I'd heard when that came out was Straight Through My Heart.