AT&T confirmed on Wednesday that it is in talks with Nokia to offer its Windows Phones in the U.S. market for 2012.

Glenn Lurie, head of AT&T’s tablets unit revealed that the carrier is working on the final details of the agreement to bring Nokia devices to the United States. “We look at every promotional period separately and decide what we’re going to spend our dollars on and what we’re going to put our efforts in,” Lurie said in aninterview with Bloomberg Business Week. “But nothing to announce there on that yet.” Nokia’s re-entry to the U.S. is being carefully planned behind closed doors and involves a massive marketing effort to ensure its Windows Phone is a big hit.

Rumors of a new Nokia Lumia handset for U.S. markets stepped up a gear this week after Nokia’s French general manager hinted that the company was planning a device above the Lumia 800. Nokia was forced to comment on the rumors, neither confirming or denying the company’s plans to produce a Windows 8-based tablet. An unannounced Nokia Lumia Windows Phone also made its way into a promotional video on Nokia’s YouTube page on Wednesday. Nokia was quick to remove the material (see image above) but the unannounced Nokia Windows Phone appears to sport a 4-inch screen and could hint at Nokia’s plans for the rumored “Ace” AT&T Windows Phone.

Nokia is understood to be preparing its U.S. Windows Phones for an announcement at the Consumer Electronics Show in early 2012. The Finnish handset maker is working with AT&T to launch its Nokia Lumia Windows Phone at CES 2012. Microsoft is planning to support Nokia’s re-entry into the U.S. market with a large presence at CES 2012. Sources familiar with Microsoft’s plans have indicated to WinRumors that Nokia is in talks with several U.S. carriers to provide an LTE compatible handset as its first U.S. Windows Phone device. AT&T is expected to be the primary launch partner of any Nokia Windows Phone devices in the United States. Nokia is also in talks with other U.S. carriers to bring its Windows Phone devices to market on rival networks.

[Via WinRumors]