Nokia's Lumia 900 LTE Windows Phone is official. We've witnessed speculation and leaks over the past few weeks, but Nokia CEO Stephen Elop unveiled the device on stage at CES 2012 today. Nokia's latest and greatest handset includes a 1.4GHz CPU, 512MB RAM, an 8-megapixel Carl Zeiss f2.2/28mm rear camera, and a 4.3-inch AMOLED display — an improvement over the Lumia 800 screen. Nokia has also added a 1-megapixel front-facing camera with an f2.4 lens, to enable video conferencing with the built-in Tango application. The most important advancement here is the introduction of LTE support on AT&T, a new offering for Windows Phone users.

The Lumia 900 will be backed by a massive advertising blitz across the US, and unique app offerings. "You'll see us push forward with sales and marketing," said Elop, before announcing ESPN, CNN and Nokia Drive apps for the Lumia 900. Nokia is also working with EA to bring their titles to the platform. There's no word on pricing, but the Lumia 900 will be available in the "coming months" exclusively on AT&T in cyan and black.