If you want to be one of the limited amount of people with a special achievement on the Xbox One you might just want to pre-order the Xbox One Day One Edition. That's basically an invitation to an exclusive party, will you RSVP?
So, the Day One Edition Xbox has a special acheievment...but what else is there? Well, the Day One Edition also includes the console (gasp), a Kinect sensor, a special controller, and a HDMI cable.
If you pre-order this, you might as well go the distance and look into buying the Day One Xbox Live Gold so that you can play Killer Instinct with an exclusive character (Shadow Jago) and be online on Day One.