According to the New York Times, a couple of unnamed sources have tipped them that Nokia will officially introduce the rumoured, and possibly already leaked, Lumia 900 at CES on Monday. But besides being "sleek" and "metallic," there's not much else revealed:

"On Monday at the International Consumer Electronics Show in Las Vegas, Nokia plans to introduce a sleek metallic Windows Phone called the Lumia 900 that will be sold by AT&T in the United States, according to two people with knowledge of its plans who spoke on condition of anonymity because the product has not yet been announced."

Besides a larger 4.3-inch WVGA display (compared to the Lumia 800's 3.7-inch) the 900 is also rumoured to include an eight megapixel camera, 512MB of RAM, and a healthy 1830mAh battery.

While the NY Times has catered to its American audience by mentioning the AT&T partnership, we're also expecting a true Nokia flagship to be announced early 2012 -- will this be it? [NY Times via MobileBurn via Dan Seifert]