When Nokia unveiled the Lumia 900 back at CES, the company gave us the full spec rundown on the 4.3-inch Windows Phone and said that it would be made available on AT&T here in the U.S. However, Nokia declined to offer details on just when the 900 will actually be launching and how much it'll cost when it does. We've heard a couple of times in the past that the Lumia 900 will be hitting AT&T in March, but a new report from BGR suggests that the wait may be a tad longer. According to a "trusted source" speaking to the site, AT&T is now aiming to release the Lumia 900 on April 22nd. BGR claims that the 900's previously-rumored $99.99 price point is still going to happen.