Nokia has still not announced the official arrival of their Nokia Lumia 800 smartphone in the US market.
Expansys is selling the unlocked version of Nokia Lumia 800 in USA now. It is priced insanely at around USD 790.
This is the 16GB edition and is compatible with 3G networks of AT&T. remains to be seen when the subsidized edition of Nokia Lumia 800 would arrive in the US market.