As you all know by now, Zune is going to be making its way to Canada in the near future. However, it was pointed out by Zunited.net that the 4/8 green model appears to be missing. On the "Meet Zune" page of Zune.net/en-CA (which is Zune journey) their is no evidence that the Zune 4/8 green Zune even exists, in the description of the 4/8 model's it states,

Proof that petite can still be powerful. Comes with video playback, a built-in FM tuner, innovative touch controls and wireless sharing capability*. Available in pink, red, and black.

Could it be possible Microsoft is removing it for the Canadian release, or could they have simply not added it in yet? The image above shows the "Meet Zune" page, maybe that gap is left for the green to fill.