So I spoke to a rep on Twitter and asked for the their best accurate answer lol and got this
"Thanks for taking the time to reach out. After some digging I found that the earliest we will ship devices is 8/18. So to be honest with you I would say the chance of getting on or before the 19th is slim. Let me know if you have any more questions on this. I’m here to help. *EmmanuelL"
Does it ship from your warehouse or from Samsung? Just curious
"Good questions, no worries I’m here to make sure you have all the info you need. This is an awesome phone and I understand you want to know when you’re getting yours so I get where you’re coming from. Expedited shipping will be free on orders through 8/21 which is 1-3 business days. The devices ordered from us will be shipped from our warehouse. *EmmanuelL"