Update: Microsoft's Major Nelson blogged about the system recently confirming its existence.

----------------------------------

A listing on Microsoft's online store that has since disappeared, featured a pre-order for a special edition Halo 4 Xbox 360 console.

The system features a 320 GB HDD, two matching controllers, special start-up and shut-down sound effects, blue lights on the console and controllers instead of green, a black headset, a copy of the game, and a number of downloadables including an armor skin, weapon skin, emblem, avatar armor, and an avatar prop.

The system, when the listing was active, was selling for $399.99. I'm sure we will get an official announcement from Microsoft soon, so keep an eye out.

[via IGN]