Nokia Lumia 900 has long been anticipated in the tech world. Most of the relevant details, however, were leaked, one way or the other, long before this launch. We even did a post about it a while ago. But well…official launch is official launch. Nokia has taken the moment at CES 2012 to launch it’s new smartphone, Nokia Lumia 900. It was unveiled by Stephen Elop, Nokia’s chief executive and it runs Windows Phone OS.