I could be wrong, but the timing of shipments & notification of said shipments may just be a byproduct of delivery times to your specific address. It "regular" shipping would be 4 days, they'll send it today. Three days to your house? they'll send it tomorrow. Again, pure speculation but this could just be shipping logistics as an art form...
Good call. I am on the west coast, obviously closer to the Alaskan port, ordered on the 9th, and no tracking number yet.