Here I was all prepared to say that I didn't feel like I'd be missing much by not pre-ordering Far Cry 4 and then they go and harpoon a bear. It's not fair, damn it. It's just not fair!
Pre-orders also come with three exclusive missions featuring Hurk, who I'm only now learning was a character in Far Cry 3, too (in a DLC pack). Huh. He seems ... annoying.
That harpoon gun, though.