Since many of us with one day shipping are tentatively scheduled for deliveries of our PW on Tuesday October 2, then Amazon is tentatively scheduled to begin shipping them on Monday October 1. Last year when they shipped the first batch of pre-ordered Fires many of us with one day shipping got them a day earlier than the tentatively scheduled day for delivery. In other words, we got them on the day they were tentatively scheduled to begin shipping.
So if, and that is a big IF, Amazon ships the PW in time to be delivered a day earlier than tentatively scheduled, in other words to be delivered on Monday, then we should see our shipping status change to "Shipping Soon" either today (Saturday) or tomorrow (Sunday). Like I said that is a big if and they might not ship until Monday, or even later.
Currently: Kindle Touch, iPhone 5, and iPad 3.