My very unscientific impression, based on a cursory look at a very limited dataset, is the D700 could be linked to custom orders taking longer. Who really knows (outside of Apple)?
Well, 4 orders with the D700 have already shipped. What I did was (in excel, not the google doc of course) sort the US store orders by cpu, memory, storage, graphics. I then noticed that of those that shipped, if there were multiple orders for the same exact config (all 4 options exactly the same), with a ship date of "January", then in those cases they all shipped.
Of course, there's very little shipping data in the sheet so its also not very scientific. There's also a couple entries where that doesn't appear to hold true (ie one order shipped and two others of the same config didn't
though that could just be data entry error or those who entered it didn't follow up).
But yeah, outside of Apple, no one really knows.. but it sort of makes sense where they may be building different configurations each day as not to mix up orders
"Today we're assembling orders with the 8c, 64gb, 1tb, D700", then no one really has to think, they just have the components for those orders on hand and just put the machines together.