I just picked up my 27" / 3.1 system. They had the i7 3.4 in stock, as well. If that was your only BTO it may be worth your time to just go pick one up locally.
I just put my order in this afternoon and it is showing 2-4 days, standard deliver will be between May 13-17 - but I did the 2TB HDD and the 2GB vid card - so maybe mine has to be made in China 1st?
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My 3.4 i7 BTO has shipped, scheduled for delivery on Friday.