This week at the developer event Mozlando, Mozilla revealed that Firefox OS was dead. At the same time, they really didn't. They suggested that they'd no longer be bringing the smartphone love with Firefox OS - they'd no longer be attempting to sell Firefox OS smartphones through carrier channels. That's different from the entire operating system dying. At the same time, the OS has been promoted as a smartphone OS almost exclusively over the past several years... so... we'll just have to wait and see.