I certainly don't want to get your hopes up, but something similar happened to me with my recent 15" PowerBook purchase. I paid for expedited shipping (2-3 day) which would've put it at my door in New Jersey on Monday, June 28th. It was a BTO coming from China and the tracking info said that it was received after the cutoff time. Despite that, FedEx showed up early with my PowerBook first thing in the morning on Friday, the 25th. I was really surprised, especially considering that the tracking info that same morning still said it was scheduled for delivery on Monday, the 28th. Really bizarre in my world since most my mail-order experiences are less than great. Anyhow, there might not be cause to get overly concerned with the "received after cutoff" comment, but your mileage may vary.
I am now waiting for my DP2.5 G5 with all of you. I ordered from MacMall and the guy says their shipment is supposed to arrive on August 6th. As much as I want to be optimistic, I am a bit doubtful that will happen.