Pocketnow have images reportedly from Microsoft-partner Christmas card and the featured item is a Nokia device with AT&T branding on board, presumably the Nokia "Ace" 900.
No other details can be discerned from the device except for a front-facing camera (upper left), which seems imperative for US markets now and for 2nd gen Windows Phones. The device is expected to feature a large 4.3" screen, AT&T LTE 4G and some other ample specs making it a decent competitor for the US and Windows Phone in general. Still, it is not clear if this device is just a revamped 800 with higher specs or truly a different device.
More info is expected in a few days as we approach CES where all is expected to be revealed. Our only criticism? We hope black isn't the only color option as it is getting a tad old these days--gives us some reds, whites and blues to make us really interested.
Source: Pocketnow; Thanks, pezman726, for the tip!