Pick up the CD. The artwork changes when heat is applied to the surface. Initially the disc is pure black. When you give it a spin on your player (or leave it in a warm car), it reveals sets of binary codes which points to an internet website when decoded (this will test your high school knowledge of binary if you were listening in your Computer Tech class).
Now to the songs. I'm really enjoying this album because it goes back to the more layered and percussive music that Trent was known for in Pretty Hate Machine.
I shouldn't spoil much more than that. Just pick it up and make sure you've got a good set of speakers or headphones to really enjoy the full package.