My phone is 16GB; I ordered on 9/13, I don't remember the time. I originally got the prepare to ship notice on 9/30.
Update: I just checked my UPS tracking number, delivery has now been rescheduled to Thursday, October 9.
That is very encouraging. I am using all my willpower not to keep checking my status as it is so disappointing when it doesn't change.
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A tracking number was generated today for me but status hasn't changed. I'm just glad something new is happening!
More good news! I hope mine changes soon too!