Previously, diglog reported that: Microsoft officially confirmed Zune. Now, we finally have real pictures of the Zune. From the images, it can be seen that it includes a black pair of headphones, and its distinctive screen is larger than the iPod's. The reason the photos are in black and white is because Microsoft assigned a unique color model to each Zune prototype (150 in total). Thus, if a colored model were leaked, it would be easy to determine which employee leaked the photo.
Image source: GIZMODO