Practically identical to my situation, my order also went from Pending to Completed last night...
Business Account... 8:40am CST 9/9
7+ MB 256GB... deliver by date of 9/23
No shipping email, however, after logging into my account - It's on its way and should be here tomorrow.
I still have no idea when mine will be here. I'm on a business account also but mine says shipping is UPSGround2. I'm really hoping that means tomorrow as well.