This one has an added feature - no CID checks on NBH. (Read on to find out why that's neat.)
So the first actual dev phones are starting to arrive, and we've got a comparison article coming up if you want to know what you actually get for your $300 shipping fee. But for now, it is confirmed that the bootloader is, at first glance, the same (same logo, same version information) as the one we announced earlier.