 Newly developed 15-inch model superseded the 11-inch model in order to meet the larger-screen preference of the Korean market and later, it was introduced worldwide.The second generation of Series9 was announced to the public at the CE Show on January 8, 2012.The new model had same display size of 13.3" but the resolution was stepped up from HD (1366 x 768) to HD+ (1600 x 900) and the brightness was increased from 300 nit to 400 nit.