Although most Ultrabooks have focused on the 11 and 13-inch form factors, today ASUS is announcing its first 15-inch Ultrabook. The Zenbook U500VZ measures 19.7mm at its thickest point. The display is the big attraction, and ASUS doesn't appear to disappoint with its 1080p 15-inch IPS panel. The larger size of the machine allows ASUS to incorporate a separate numeric keypad. The entire keyboard is backlit of course.

Since the design isn't ultra thin it loses the Prime suffix and is simply a Zenbook, despite having the upgraded display and new keyboard from the Zenbook Prime. 

Under the hood ASUS is building in a quad-core Ivy Bridge Core i7 CPU and optional NVIDIA GeForce GT 650M. Storage options are pretty flexible thanks to the system's two 2.5" drive bays. You can get two SSDs for up to 512GB of storage, or ASUS also offers a 128GB SSD + 500GB HDD option if you want speed, capacity and value. 

There are a lot of specs missing from the release but we'll add more as we get them.