Here is a handsome display of all the contents.
Let's hit a few highlights. To the right, we've got a sample chapter of Zendikar: In the Teeth of the Akoum. Note that it's a sample chapter, even though it looks like it might be the full book in the picture there. It actually looks like this:
There's also, of course, a spindown counter and eight boosters. For a better look at the boosters, check out yesterday's Arcana.
There's also a storage box, the wraparound mural, a player's puide, and forty Rise of the Eldrazi basic land.