I do not currently have this information. It will be announced later.
I hope you guys have been working with North American carriers. It would be great if this supports all the network bands from the new T-Mobile that merged with Sprint.
I've been pretty happy with some of partnerships that ASUS has established to create this phone such as teaming up with Unity to help ensure that games run smoothly on ROG Phones. The only thing left is to work with carriers in North America to make sure the phone functions properly in North American networks.
As a PC gamer and builder, I have a strong attachment to ROG products. The ROG Phone lineup is the closest to my ideal phone but is sadly not offered by and even lacked full support from North American carriers. I hope this changes soon.