Hi Muttzmuttz
I think many of us have been trying to establish some kind of logic to it for many months – I know of people on this forum who ordered an ultimate like me and had their car a couple of months ago.
My conclusion for what it’s worth is that colour is a definite criteria – presumably they batch colour – then there are different fittings ie black or light grey – ultimate adds more chips which I think has definitely been an issue. I have no idea as to how many different varieties of chip goes into a premium as opposed to an ultimate. But I suspect shipping more premium at the expense of the ultimate – especially in uk due to grant differential, would definitely be part of the decision making.
So to sum up I believe colour trim and amount of chips were the reasons for the order of despatch – without having an understanding of their stock – who knows!!
For the record I ordered Ultimate light grey interior misty jungle at the end of October.
I sincerely hope you and others get your cars sooner rather than later.