Verizon Wireless won't tell you when until they issue an official press release.
Motorola isn't saying anything either. Moto Z Force Droid Edition | Motorola
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Per Droid-Life that was simply a press event and there are embargos on the info in terms of the launch date. Hopefully we will know soon. My Father dropped his Turbo device into his drink a couple of days ago and is elg for an upgrade soon.