ASUS' rumored major ultrabook upgrades were given their first real details through leaks on Monday. The Zenbook UX21A and UX31A models identified by The Verge would be direct replacements for the existing 11.6- and 13.3-inch UX21 and UX31, respectively, but with an option for a 1080p, IPS-based display on either model. Their conventional 1366x768 (UX21) and 1600x900 (UX31) displays would still come standard.
