>>What xBox 360? Oh, you mean the one that doesn't actually exist yet except on paper? The one that'll have something different besides the desktop G5 that Jobs promised would be running at 3 GHz "within 12 months" back in 2003?
Actually, current development sets are dual core.. Tri-core development kit is being sent out...
It would be way too big of a risk for MS to promise vaporware at this point. If they are announcing, it's ready for production.