I ordered my iMac on 1/31 and the pending charge on my card fell off a couple of days later. This morning I woke up and the pending charge is back on there. I am hoping that means that it might change to preparing tomorrow, but I have my doubts since there are multiple orders ahead of me according to the spreadsheet. Exciting none the less.
My credit card got charged yesterday for my order and I ordered on the 28th Still on processing though. I assume it could possibly be because of it being Sunday, but not sure. Ill check tomorrow and update !