AT&T may be the home to one of the first headlining devices for Windows Mobile 7, a slide from a leaked presentation shows. The LG Monaco would be a full touchscreen smartphone with a 3.2-inch, 800x480 display and a slide-out QWERTY keyboard underneath. The new Microsoft OS is claimed by Engadget to be the centerpiece, however, and may require that the device support multi-touch, a level of inpu