LG has announced their own Ultrabook model named LG Xnote Z330.
LG Xnote Z330 looks pretty similar to the Apple MacBook Air which is the market leader in this space.
The company is offering it with a 13.3-inch HD LED-backlit display capable of 1366 x 768 resolution.
The top end configuration offers a 1.8GHz Intel Core i7 and a 256GB SSD. Prices range between USD 1500-2300 though it is currently only available in the South Korean market.