Dell showed the heart of its 2012 laptop design language in the XPS 13 just as the snow started melting, but it's been mostly silent or conservative ever since. The company must want to close out the spring the same way it entered: Dell and Romania's Asesoft Distribution have just previewed a larger XPS 15 at an event B1 attended at the Bucharest-based Romanian Aviation Museum. Based on the early look, Dell isn't going to stretch the Ultrabook defin