All this talk about changes to orders does my head in. We were told when we paid our deposits that we could make minor changes WHEN WE SIGNED OUR CONTRACTS, so all the drama over the past few months has, in my opinion, been pointless.
I have a very early build slot (hopefully still next month) and I have not yet received a contract, but when I do I will be able to make any minor changes I may require. (We have already been told that major changes could affect our build slot.)
It's even still in the FAQ's. I can only recommend that everybody takes a screenshot of this so if necessary we'd have a collective evidence in case this suddenly disappers. Here is the German site, but I saw it on English sites as well:
To get there, I made steps 1, 2, 3: