What Preorder Bonus includes Watch Dogs 2?

I have read preordering Watch Dogs 2 will include a bonus. What's this bonus?
Additionally, what is the difference between "preorder bonus" and "deluxe edition"? I am a bit confused with this terminology...

I would like to buy the edition with all future DLCs included. What's the edition I should buy in order to get this?

Source: https://gocdkeys.com/watch-dogs-2-price/watch-dogs-2-pc-cd-key