Question about carrier free Lumia 920 in US

[Moiz Mian]

Amazon.com: Nokia Lumia 920 Smartphone - unlocked - White: Cell Phones & Accessories

So this phone sold on amazon is carrier free, so my question is, which rom does it have? And where will it get it's update from? There is no US "country variant" on Nokia' Amber update support page. Is it possibly an ATT developer rom?

 

[rdubmu]

I am assuming it is most likely a general unlocked rom.

 

[Moiz Mian]

Would it have GDR2?

Software update for Nokia Lumia with Windows Phone 8 - Nokia

Which variant is it?

 

[Moiz Mian]

Nobody knows???