I ordered a mini customized with 4 GB ram, because it wouldn't be that much cheaper for me to buy the ram elsewhere. I think it is supposed to ship today, but checking the order status page it now says: "Cancelled -- Replaced with new product" (translated), with the configuration of the "new" one being identical to the original. Is this Apple's SOP?
I guess it is still true that you should never let Apple customize the computer, even if the price difference is negligible.
Update: Estimated shipping date delivery date has now been changed, three business days later than the original date (five days in total!). It is as if I had actually cancelled my order and placed a new one. Thanks Apple!