The latest Windows Ultrabook to square off against the 13-inch Retina MacBook Pro is the http://us.toshiba.com/kira/touchscreen” target=”_blank”>Toshiba KIRAbook, housed in a pressed magnesium alloy body and boasting a 2,560 x 1,440 13.3-inch display (the first Windows notebook to sport that level of screen resolution). It has a fingerprint resistant touchscreen courtesy of Corning Concore Glass, and a firm extra-wide hinge to reduce screen wobble. The base model, priced at $1,600, packs an Intel Core i5-3337U processor, 8GB of RAM, a 256GB solid state drive and Windows 8 Pro. Touchscreen capabilities can be added to this model for an additional $200, while the top-of-the-line configuration includes a touchscreen and a Core i7-3537U processor for $2,000. It comes packaged in a svelte case that starts at 2.66 pounds and measures just 0.7 inches thick at its narrowest point. Look for the Toshiba KIRAbook to start shipping in May.