The Envy Spectre XT Ultrabook has just been officially unveiled by HP as a refresh of the previous Envy Spectre. The new Spectre XT Ultrabook represents HP’s top of the line Ultrabook offering Intel’s latest third-generation Ivy Bridge CPU with HD4000 graphics and a full range of ports. At just 14.55mm thick and 1.39kg, the Spectre XT can manage up to 8 hours of battery life, according to HP. Step inside for a rundown of features, a gallery of photos, and a hands-on video.