According to this Tumblr post (and more professionally, this Xitter tweet), there was a massive leak of concept art, source code, and scouting images.
@Cold Hard Crash already
But there's bound to be more that comes from this as people work through the 20 terabytes. This is something that will probably take social media by storm until the week before Halloween, I think. I guess this is more of a warning than anything, and a suggestion/reminder to focus more on fan art or funny tweets instead of every little thing from the leak.
