That's weird...
I ordered a BTO mac mini the 19th, July, and the same day was already shipped (to Spain), although BTO are stored at their hub in Netherlands, but still... it's taking a lot of time for the factory in China :/
Ring Apple and ask them about it, I'm sure they will speed it up (I have ordered a CTO MacBook Pro yesterday, and the day when I'm supposed to receive it is a day after I leave the country for four months... hence if it is not shipped by Friday... I will ring Apple, and on Monday I will have to cancel it on the worst case scenario :/ )