Well according to this, there is one for europe and one for the states. Would make sense that Cingular would be the carrier for the states since it's a GSM phone. And Nokia is trying to make a impact here. I wouldn't be suprised if we never see the N75 and see a N76 with AT&T branding.
http://www.phonearena.com/htmls/CES...cle-a_1720.html