I ordered two devices on September 9, 2016. (iphone 7 128gb black&rose gold)
The Rosegold received an LT yesterday for September 16th and then this morning the SMS with the tracking number. Shortly later the email for Black arrived with the date September 23rd.
To my delight, I received a text message about 2-3 hours later informing me that my black device was also being prepared for shipping.
So they will both arrive tomorrow.
I ordered on September 9th immediately after 9am.