The Nokia Lumia 900 for AT&T was announced recently at CES 2012, but pricing and availability details weren’t released. What we do know from the official announcement is that it would launch sometime in the coming months on AT&T operating on its 4G LTE network.
However, today, we learned about a specific launch date in March that seems pretty accurate since it came from a Nokia Developers Newsletter. Essentially, the Lumia 900 is slated to launch on March 18th with AT&T, but pricing information is still not available. If this information turns about to be true, I imagine AT&T will officially announce the launch date and pricing information several days before March 18.
In terms of specs, the Lumia 900 features a 4.3 inch Super AMOLED display, a single-core 1.4GHz processor, WP7.5, 8MP rear facing camera, 16GB of onboard storage, a front facing camera, and 512MB of RAM.